Relevant bibliographies by topics / Broadband Wireless Access [BWA]

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Broadband Wireless Access [BWA]'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Broadband Wireless Access [BWA]"

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Pramita aswitami, Gusti Ayu, Dany Hilmanto, Farid Husin, Johanes Cornelius Mose, Firman Fuad Wirakusumah, and Henni Djuhaeni. "Pengaruh Penerapan Teknologi Broadband Wireless Access (BWA) Terhadap Efektivitas Biaya Praktik Klinik Kebidanan." Jurnal Pendidikan dan Pelayanan Kebidanan Indonesia 3, no. 1 (July 19, 2017): 52. http://dx.doi.org/10.24198/ijemc.v3i1.44.

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Sistem pembelajaran praktik klinik yang telah berjalan belum mampu meningkatkan kompetensi mahasiswa. Biaya praktik klinik yang relatif mahal dengan tidak tercapainya kompetensi mahasiswa menunjukkan belum tercapainya efektivitas biaya pada praktik klinik kebidanan sehingga diperlukan upaya pengembangan praktik klinik. Salah satu upaya pengembangannya dengan menerapkan teknologi BWA. Tujuan penelitian ini adalah; mengukur capaian kompetensi mahasiswa, mengukur biaya praktik klinik pada sistem praktik dengan penerapan teknologi Broadbrand Wireless Access (BWA) dan menganalisis pengaruh penerapan teknologi BWA pada sistem praktik klinik terhadap efektivitas biaya.Metode penelitian menggunakan kuasi eksperimen dengan posttest only with nonequivalent control groups. Subjek penelitian dibagi menjadi 2 kelompok yaitu; kelompok perlakuan sebanyak 27 orang dari 3 Institusi Pendidikan dan kelompok kontrol sebanyak 26 orang dari 2 Institusi Pendidikan. Penelitian ini dilakukan di RSUD Majalaya dan RSUD Soreang pada bulan September-Desember 2015. Perbedaan kompetensi dianalisis menggunakan uji Chi Kuadrat, perbedaan biaya dianalisis menggunakan uji Mann Whitney, pengaruh penerapan teknologi BWA terhadap efektivitas biaya menggunakan uji Chi Kuadrat.Hasil penelitian menunjukkan ada perbedaan pencapaian kompetensi yang bermakna pada kelompok perlakuan dan kelompok kontrol (p<0,05). Pada uji statistik terdapat perbedaan biaya praktik klinik pada kelompok perlakuan dan kelompok kontrol (p<0,05). Terdapat pengaruh penerapan teknologi BWA terhadap efektivitas biaya dengan uji Chi Kuadrat (p<0,05;RR=1,6;IK95%=1,2-2,3). Simpulan penelitian ini adalah kompetensi mahasiswa lebih tinggi dengan biaya praktik klinik lebih rendah pada sistem praktik klinik yang menerapkan teknologi BWA dibandingkan dengan sistem yang telah berjalan. Sistem praktik klinik dengan penerapan teknologi BWA memberikan efektivitas biaya sebesar 1,68 kali.
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Rafsyam, Yenniwarti, Milda Yuliza, and Lifwarda Lifwarda. "Aplikasi WiMAX." Elektron : Jurnal Ilmiah 1, no. 1 (September 10, 2009): 67–74. http://dx.doi.org/10.30630/eji.1.1.11.

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WiMAX is Broadband Wireless Acces (BWA) technology evolution with interactive fitur. WiMAX not only have issue about data speed problem but also about open standard. It means, communications between WiMax instruments between some different vendors are not proprietary. WimAX orientations are not only for fixed market, but also for portable and mobile market. WiMAX with high speed data (up to 70 MBps) is suitable to apply in last mile broadband connections, backhaul and high speed enterprise.
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Wibisono, Gunawan, Daniel Simanjuntak, and Taufiq Alif Kurniawan. "Perancangan Quadband BPF dengan Komponen Lumpeduntuk Sistem m-BWA." Jurnal Elektronika dan Telekomunikasi 13, no. 2 (June 29, 2016): 47. http://dx.doi.org/10.14203/jet.v13.47-54.

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Ada banyak teknologi mobile broadband wireless access (m-BWA) yang saat ini digunakan, agar bisa mencakup seluruh teknologi m-BWA yang ada dalam sebuah perangkat maka diperlukan teknologi multiband . Salah satu komponen penting yang mendukung perkembangan teknologi m-BWA adalah bandpass filter (BPF), yang berfungsi untuk memilah-milah dan mengisolasi band yang spesifik dari interferensi pada transceiver radio frequency (RF). Pada penelitian ini akan dirancang quadband BPF yang beroperasi pada frekuensi tengah 950 MHz dan 1,85 GHz untuk aplikasi GSM, 2,35 GHz untuk aplikasi WiMAX, dan 2,65 GHz untuk aplikasi LTE secara simultan. Rangkaian quadband BPF dibangun dan dikembangkan dari konsep dualband BPF dengan menambahkan sejumlah cross coupling pada inductive coupling BPF tersebut untuk menghasilkan zero pada frekuensi tertentu yang diharapkan menggunakan komponen lumped. BPF yang dirancang memiliki spesifikasi, input return loss (S11) < -10 dB, insertion loss (S21) > -3 dB, dan voltage standing wave ratio (VSWR) antara 1 – 2, dan group delay kurang dari 10 ns. Perancangan dilakukan menggunakan perangkat lunak Advance Design System (ADS) dan kemudian difabrikasi berbasis printed circuit board (PCB). Hasil simulasi BPF menunjukkan kinerja quadband BPF memenuhi kriteria perancangan sedangkan hasil fabrikasi mengalami pergeseran.
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Susilawati, Hesti, Widhiatmoko Widhiatmoko, and Dimass Noly Mardhiko. "Perencanaan Jaringan Akses Mobile Wimax (Worldwide Interoperability For Microwave Access) 2,5 Ghz Untuk Wilayah DKI Jakarta." JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 3, no. 1 (May 10, 2011): 37. http://dx.doi.org/10.20895/infotel.v3i1.87.

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Standar IEEE 802.16e yang dikenal dengan mobile WiMAX adalah standar broadband wireless access (BWA) yang beroperasi pada frekuensi 2 - 6 GHz. Standar ini merupakan pengembangan dari standar WiMAX sebelumnya untuk mendukung mobilitas pengguna. Pada penelitian ini, penulis melakukan perhitungan untuk memprediksi kebutuhan bandwidth untuk pelanggan mobile WiMAX di wilayah DKI Jakarta untuk jangka waktu tiga tahun sejak WiMAX diimplementasikan. Kebutuhan bandwidth ini akan digunakan untuk menentukan jumlah base station yang dibutuhkan dari sisi kapasitas. Penulis juga melakukan perhitungan jumlah base station dari sisi coverage menggunakan persamaan Erceg. Dari hasil perhitungan tersebut, dapat disimpulkan bahwa pada tiga tahun pertama penetrasi WiMAX di Jakarta, kebutuhan jumlah base station dari sisi coverage lebih besar dari pada perhitungan dari sisi kapasitas.
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Pramanta, Dinda, Denny Darlis, and Iswahyudi Hidayat. "Simulation of Memory-Based 1024-Point Fast Fourier Transform for Broadband Wireless Access Technology on FPGA." IJAIT (International Journal of Applied Information Technology) 1, no. 02 (August 14, 2017): 28–36. http://dx.doi.org/10.25124/ijait.v1i02.872.

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The limited radio frequency spectrum that can be used for transmission leads to bandwidth and power efficiency being a key requirement in the development of wireless access technology from 3G to 5G today. Data communication technology also requires this as mentioned on high speed network standards such as DSL, WLAN and WMAN with its products ADSL, WiFi and Wimax. In the last few decades we have seen the evolution of the Orthogonal Frequency Division Multiplexing (OFDM) modulation technique used in the technologies mentioned earlier to this day. This technique is regarded as a standard technology for broadband wireless access technology. In hardware implementation, the most preferred by many researchers is the Field Programmable Gate Array chip, as it can be reconfigured. The OFDM technique can be easily implemented because it uses Fast Fourier Transform (FFT) algorithms that are coding and programming capable of reducing the computational time of Discrete Fourier Transform. This paper discusses the implementation of the memory-based 1024-point IFFT / FFT for BWA communications. The design is focused on synthesizing and implementing the system block FFT 1024-point radix-4 using Decimation in Frequency (DIF) method. Implementation for IFFT / FFT 1024-point resource usage slice number 1%, the number of slice flip-flop 1%, the number 4 LUT (Look Up Table) 1%, and the number of IOB 27%. of the FPGA are used.
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MOKDAD, LYNDA, and JALEL BEN-OTHMAN. "STOCHASTIC AUTOMATA NETWORKS FOR MODELLING SCHEDULING SCHEME IN WiMAX NETWORKS." Journal of Interconnection Networks 10, no. 04 (December 2009): 481–95. http://dx.doi.org/10.1142/s0219265909002674.

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WiMAX (Worldwide Interpretability for Microwave Access) is one of the leader standards of broadband Wireless Access (BWA). This standard becomes a competitor of 4G or LTE (Long Terme Evolution) with the introduction of different class of service flow (UGS, rtPS, nrtPS, BE). Each service class has its own QoS requirements. Even if the standard specify the transmission policy of each service class, it recommends the implementation of an admission control (AC) without any specification. This task is let to the operator. In this paper, we propose an implementation of an AC algorithm mechanism for IEEE 802.16. The performance evaluation of these networks by analytical models is not easy due to the state space explosion, thus we use the Stochastic Automata Networks (SAN) formalism to model our proposed AC mechanism. With the SAN we calculate the rewards of the proposed AC and we show that the proposed solution is efficient.
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FURQAN, FATIMA, and DOAN B. HOANG. "Wireless Fair Intelligent Congestion Control — A QoS Performance Evaluation." Journal of Interconnection Networks 14, no. 03 (September 2013): 1360001. http://dx.doi.org/10.1142/s0219265913600013.

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In Broadband Wireless Access (BWA) networks, provisioning of Quality of Service (QoS) is absolutely essential for real time and non real time services. Congestion in these networks can lead to deterioration in QoS experienced by the network users. Congestion avoidance is rarely considered to ensure the QoS of wireless connections. Efforts are mainly aimed at reducing the overload once it has occurred. To avoid congestion at the base station in WiMAX networks, the WiMAX Fair Intelligent Congestion Control (WFICC) was proposed to ensure the traffic is scheduled in such a way that the base station output buffer operates around a target operating point without violating the QoS requirements of connections. The aim of this paper is to investigate WFICC thoroughly and evaluate its performance in terms of throughput, delay and jitter for different Classes of Services (CoSs) under various parameter settings of the algorithm. A detailed and comprehensive simulation study on various settings of parameters is performed in ns-2. The results show that WFICC performs excellently in allocating resources fairly among Class of Services (CoSs) and also preserves their QoS requirements. Furthermore, WFICC is robust and easily adapted to various traffic conditions.
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Santiko, Arief Budi, Yahya Syukri Amrullah, Yuyu Wahyu, Muhammad Ilham Maulana, and Bambang Setia. "Design and Realization of Coupled Line Bandpass Filter Using Compact Structure at Frequencies of 3300 MHz – 3400 MHz for WiMAX Application." Jurnal Elektronika dan Telekomunikasi 16, no. 1 (December 15, 2016): 11. http://dx.doi.org/10.14203/jet.v16.11-14.

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In this paper, the design of microstrip BPF (Bandpass Filter) for WiMAX (Worldwide Interoperability for Microwave Access) application has been presented. The frequency band allocations for BWA (Broadband Wireless Access) in Indonesia are 2.3; 3.3 and 5.8 GHz. This microtrip BPF is designed using parallel coupled line in compact form and it has spesific parameter, i.e. 3.35 GHz center frequency, 400 MHz bandwidth, VSWR ≤ 2, -3 dB insertion loss and matching impedance between two port is 50 Ω. The Advanced Design System (ADS) software has been used during simulation and optimization. The simulation results show that return loss S11 and insertion loss S21 are -15.31 dB and -2.2 dB at 3.35 GHz respectively. For the design verification, the prototype of the proposed design wasfabricated and measured.The results of the fabrication approach of simulation results, which have return loss value S11and insertion loss S21 of the proposed microstrip filter are -18.20 dB and -2.91 dB at 3.35 GHz respectively. The result shows that the proposed design can be implemented forWiMAX communication system applications
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Park, Duk-Kyu, and Young Soo Kim. "Analysis of Radio Frequency Allocation and Utilization Plan for Private Network Using Local 5G and Regional Broadband Wireless Access(BWA) in Japan." Journal of Korean Institute of Electromagnetic Engineering and Science 30, no. 7 (July 2019): 523–32. http://dx.doi.org/10.5515/kjkiees.2019.30.7.523.

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Rafi Ul Islam, Md, Tharek bin Abd Rahman, Sharul Kamal Bin Abd Rahim, Kusay Faisal Al-tabatabaie, and Amuda Yusuf Abdulrahman. "FADE MARGINS PREDICTION FOR BROADBAND FIXED WIRELESS ACCESS (BFWA) FROM MEASUREMENTS IN TROPICS." Progress In Electromagnetics Research C 11 (2009): 199–212. http://dx.doi.org/10.2528/pierc09103006.

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Dissertations / Theses on the topic "Broadband Wireless Access [BWA]"

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Bai, Xin. "Broadband Wireless Access in Disaster Emergency Response." Thesis, KTH, Kommunikationssystem, CoS, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92207.

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The “WLAN in Disaster Emergency Response” (WIDER) project has developed and implemented an emergency communication system. It provides network and communication services to relief organizations. In order to guarantee the stable and efficient connectivity with a high quality of service (QoS) for the end user, and to make the WIDER system more adaptive to the disaster area, the IEEE 802.16 specification based broadband wireless access solution is adopted. This thesis work aims at evaluating and testing the WIDER system integrated with WiMAX. By learning and analyzing the technology, the benefits and perspective for WIDER using WiMAX are described. A WiMAX solution was configured and integrated into the WIDER system. A series of tests and measurements provide us the performance of the WiMAX solution in throughput, QoS, and reality. The tests helped us to learn and verify the improvements for WIDER due to WiMAX.
“WLAN in Disaster Emergency Response” (WIDER) projektet har utvecklat och implementerat ett kommunikationssystem för katastrof situationer. Systemet tillhandahåller nätverk- och kommunikationstjänster för hjälporganisationer. För att garantera en stabil och effektiv anslutning med hög Quality of Service för användarna samt göra WIDER systemet mer anpassbart för katastrofområden, kommer Broadband wireless access som är baserade på IEEE 802.16 specifikationen att användas. Det här examensarbetet har som målsättning att utvärdera och testa WIDER med WiMax tekniken, vi beskriver olika fördelar och synvinklar med att använda WiMax genom att lära oss och analysera tekniken. En WiMax lösning konfigurerades och integrerades i WIDER systemet. En rad tester och mätningar visar WiMax-lösningens prestanda i form av throughput, Quality of Service och realitet. Testerna lärde oss och hjälpte oss att verifiera förbättringarna i WIDER i och med användningen av WiMax.
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Yin, Fei. "Evaluation et optimisation de performance dans les réseaux IEEE 802. 16." Paris 6, 2009. http://www.theses.fr/2009PA066123.

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IEEE 802. 16 définit un mécanisme d’allocation de la bande passante basé sur réservation. Dans ce mécanisme, sont définis les deux principaux modes de polling : le polling mode unicast et le polling mode contention. Il faudrait avoir un mécanisme pour adopter les deux modes de polling afin d’optimiser la performance. Nous proposons un simple mais efficace mécanisme de polling pour adopter les deux modes de polling d’une manière efficiente et équitable, qui optimise enfin la performance. Le mode contention est utilisé par les applications comme nrtPS et BE pour demander la bande passante à lien montant. Le nombre de la bande passante alloué aux requêtes sur contention va influencer d’une façon significative la performance. Nous analysons et développons un simple modèle mathématique pour évaluer la performance. Une période optimale contention-request dans cette trame est introduite. La taille optimale est aussi influencée par le nombre des terminaux dans le réseau, ceci est aussi analysé
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De, Obaldía Lee Galileo E. "Multiple access techniques for emerging broadband wireless access networks." Thesis, University of York, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403800.

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Wong, Shin Horng. "Channel allocation for broadband fixed wireless access networks." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619909.

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Gutiérrez, González Ismael. "Adaptive Communications for Next Generation Broadband Wireless Access Systems." Doctoral thesis, Universitat Ramon Llull, 2009. http://hdl.handle.net/10803/9141.

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Un dels aspectes claus en el disseny i gestió de les xarxes sense fils d'accés de banda ampla és l'ús eficient dels recursos radio. Des del punt de vista de l'operador, l'ample de banda és un bé escàs i preuat que s´ha d'explotar i gestionar de la forma més eficient possible tot garantint la qualitat del servei que es vol proporcionar. Per altra banda, des del punt de vista del usuari, la qualitat del servei ofert ha de ser comparable al de les xarxes fixes, requerint així un baix retard i una baixa pèrdua de paquets per cadascun dels fluxos de dades entre la xarxa i l'usuari. Durant els darrers anys s´han desenvolupat nombroses tècniques i algoritmes amb l'objectiu d'incrementar l'eficiència espectral. Entre aquestes tècniques destaca l'ús de múltiples antenes al transmissor i al receptor amb l'objectiu de transmetre diferents fluxos de dades simultaneament sense necessitat d'augmentar l'ample de banda. Per altra banda, la optimizació conjunta de la capa d'accés al medi i la capa física (fent ús de l'estat del canal per tal de gestionar de manera optima els recursos) també permet incrementar sensiblement l'eficiència espectral del sistema.

L'objectiu d'aquesta tesi és l'estudi i desenvolupament de noves tècniques d'adaptació de l'enllaç i gestió dels recursos ràdio aplicades sobre sistemes d'accés ràdio de propera generació (Beyond 3G). Els estudis realitzats parteixen de la premissa que el transmisor coneix (parcialment) l'estat del canal i que la transmissió es realitza fent servir un esquema multiportadora amb múltiples antenes al transmisor i al receptor. En aquesta tesi es presenten dues línies d'investigació, la primera per casos d'una sola antenna a cada banda de l'enllaç, i la segona en cas de múltiples antenes. En el cas d'una sola antena al transmissor i al receptor, un nou esquema d'assignació de recursos ràdio i priorització dels paquets (scheduling) és proposat i analitzat integrant totes dues funcions sobre una mateixa entitat (cross-layer). L'esquema proposat té com a principal característica la seva baixa complexitat i que permet operar amb transmissions multimedia. Alhora, posteriors millores realitzades per l'autor sobre l'esquema proposat han permès també reduir els requeriments de senyalització i combinar de forma óptima usuaris d'alta i baixa mobilitat sobre el mateix accés ràdio, millorant encara més l'eficiència espectral del sistema. En cas d'enllaços amb múltiples antenes es proposa un nou esquema que combina la selecció del conjunt optim d'antenes transmissores amb la selecció de la codificació espai- (frequència-) temps. Finalment es donen una sèrie de recomanacions per tal de combinar totes dues línies d'investigació, així con un estat de l'art de les tècniques proposades per altres autors que combinen en part la gestió dels recursos ràdio i els esquemes de transmissió amb múltiples antenes.
Uno de los aspectos claves en el diseño y gestión de las redes inalámbricas de banda ancha es el uso eficiente de los recursos radio. Desde el punto de vista del operador, el ancho de banda es un bien escaso y valioso que se debe explotar y gestionar de la forma más eficiente posible sin afectar a la calidad del servicio ofrecido. Por otro lado, desde el punto de vista del usuario, la calidad del servicio ha de ser comparable al ofrecido por las redes fijas, requiriendo así un bajo retardo y una baja tasa de perdida de paquetes para cada uno de los flujos de datos entre la red y el usuario. Durante los últimos años el número de técnicas y algoritmos que tratan de incrementar la eficiencia espectral en dichas redes es bastante amplio. Entre estas técnicas destaca el uso de múltiples antenas en el transmisor y en el receptor con el objetivo de poder transmitir simultáneamente diferentes flujos de datos sin necesidad de incrementar el ancho de banda. Por otro lado, la optimización conjunta de la capa de acceso al medio y la capa física (utilizando información de estado del canal para gestionar de manera óptima los recursos) también permite incrementar sensiblemente la eficiencia espectral del sistema.
El objetivo de esta tesis es el estudio y desarrollo de nuevas técnicas de adaptación del enlace y la gestión de los recursos radio, y su posterior aplicación sobre los sistemas de acceso radio de próxima generación (Beyond 3G). Los estudios realizados parten de la premisa de que el transmisor conoce (parcialmente) el estado del canal a la vez que se considera que la transmisión se realiza sobre un sistema de transmisión multiportadora con múltiple antenas en el transmisor y el receptor. La tesis se centra sobre dos líneas de investigación, la primera para casos de una única antena en cada lado del enlace, y la segunda en caso de múltiples antenas en cada lado. Para el caso de una única antena en el transmisor y en el receptor, se ha desarrollado un nuevo esquema de asignación de los recursos radio así como de priorización de los paquetes de datos (scheduling) integrando ambas funciones sobre una misma entidad (cross-layer). El esquema propuesto tiene como principal característica su bajo coste computacional a la vez que se puede aplicar en caso de transmisiones multimedia. Posteriores mejoras realizadas por el autor sobre el esquema propuesto han permitido también reducir los requisitos de señalización así como combinar de forma óptima usuarios de alta y baja movilidad. Por otro lado, en caso de enlaces con múltiples antenas en transmisión y recepción, se presenta un nuevo esquema de adaptación en el cual se combina la selección de la(s) antena(s) transmisora(s) con la selección del esquema de codificación espacio-(frecuencia-) tiempo. Para finalizar, se dan una serie de recomendaciones con el objetivo de combinar ambas líneas de investigación, así como un estado del arte de las técnicas propuestas por otros autores que combinan en parte la gestión de los recursos radio y los esquemas de transmisión con múltiples antenas.
In Broadband Wireless Access systems the efficient use of the resources is crucial from many points of views. From the operator point of view, the bandwidth is a scarce, valuable, and expensive resource which must be exploited in an efficient manner while the Quality of Service (QoS) provided to the users is guaranteed. On the other hand, a tight delay and link quality constraints are imposed on each data flow hence the user experiences the same quality as in fixed networks. During the last few years many techniques have been developed in order to increase the spectral efficiency and the throughput. Among them, the use of multiple antennas at the transmitter and the receiver (exploiting spatial multiplexing) with the joint optimization of the medium access control layer and the physical layer parameters.
In this Ph.D. thesis, different adaptive techniques for B3G multicarrier wireless systems are developed and proposed focusing on the SS-MC-MA and the OFDM(A) (IEEE 802.16a/e/m standards) communication schemes. The research lines emphasize into the adaptation of the transmission having (Partial) knowledge of the Channel State Information for both; single antenna and multiple antenna links. For single antenna links, the implementation of a joint resource allocation and scheduling strategy by including adaptive modulation and coding is investigated. A low complexity resource allocation and scheduling algorithm is proposed with the objective to cope with real- and/or non-real- time requirements and constraints. A special attention is also devoted in reducing the required signalling. However, for multiple antenna links, the performance of a proposed adaptive transmit antenna selection scheme jointly with space-time block coding selection is investigated and compared with conventional structures. In this research line, mainly two optimizations criteria are proposed for spatial link adaptation, one based on the minimum error rate for fixed throughput, and the second focused on the maximisation of the rate for fixed error rate. Finally, some indications are given on how to include the spatial adaptation into the investigated and proposed resource allocation and scheduling process developed for single antenna transmission.
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Zhang, Jin. "Fixed broadband wireless access systems at millimeter wave frequency." Thesis, University of South Wales, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436363.

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Saini, Ranjiv Singh. "Equalization requirements and solutions for fixed broadband wireless access systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0009/MQ36895.pdf.

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Bernardi, Giacomo. "Deployment and operational aspects of rural broadband wireless access networks." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6241.

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Broadband speeds, Internet literacy and digital technologies have been steadily evolving over the last decade. Broadband infrastructure has become a key asset in today’s society, enabling innovation, driving economic efficiency and stimulating cultural inclusion. However, populations living in remote and rural communities are unable to take advantage of these trends. Globally, a significant part of the world population is still deprived of basic access to the Internet. Broadband Wireless Access (BWA) networks are regarded as a viable solution for providing Internet access to populations living in rural regions. In recent years, Wireless Internet Service Providers (WISPs) and community organizations around the world proved that rural BWA networks can be an effective strategy and a profitable business. This research began by deploying a BWA network testbed, which also provides Internet access to several remote communities in the harsh environment of the Scottish Highlands and Islands. The experience of deploying and operating this network pointed out three unresolved research challenges that need to be addressed to ease the path towards widespread deployment of rural BWA networks, thereby bridging the rural-urban broadband divide. Below, our research contributions are outlined with respect to these challenges. Firstly, an effective planning paradigm for deploying BWA networks is proposed: incremental planning. Incremental planning allows to anticipate return of investment and to overcome the limited network infrastructure (e.g., backhaul fibre links) in rural areas. I have developed a software tool called IncrEase and underlying network planning algorithms to consider a varied set of operational metrics to guide the operator in identifying the regions that would benefit the most from a network upgrade, automatically suggesting the best long-term strategy to the network administrator. Second, we recognize that rural and community networks present additional issues for network management. As the Internet uplink is often the most expensive part of the operational expenses for such deployments, it is desirable to minimize overhead for network management. Also, unreliable connectivity between the network operation centre and the network being managed can render traditional centralized management approaches ineffective. Finally, the number of skilled personnel available to maintain such networks is limited. I have developed a distributed network management platform called Stix for BWA networks, to make it easy to manage such networks for rural/community deployments and WISPs alike while keeping the network management infrastructure scalable and flexible. Our approach is based on the notions of goal-oriented and in-network management: administrators graphically specify network management activities as workflows, which are run in the network on a distributed set of agents that cooperate in executing those workflows and storing management information. The Stix system was implemented on low-cost and small form-factor embedded boards and shown to have a low memory footprint. Third, the research focus moves to the problem of assessing broadband coverage and quality in a given geographic region. The outcome is BSense, a flexible framework that combines data provided by ISPs with measurements gathered by distributed software agents. The result is a census (presented as maps and tables) of the coverage and quality of broadband connections available in the region of interest. Such information can be exploited by ISPs to drive their growth, and by regulators and policy makers to get the true picture of broadband availability in the region and make informed decisions. In exchange for installing the multi-platform measurement software (that runs in the background) on their computers, users can get statistics about their Internet connection and those in their neighbourhood. Finally, the lessons learned through this research are summarised. The outcome is a set of suggestions about how the deployment and operation of rural BWA networks, including our own testbed, can be made more efficient by using the proper tools. The software systems presented in this thesis have been evaluated in lab settings and in real networks, and are available as open-source software.
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Kalantari-Sabet, Bahman. "MAC constraints in hybrid optical-wireless 802.11 broadband access networks." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/17224/.

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This thesis deals with the characteristics and performance analysis of hybrid optical-wireless 802.11 broadband access networks. The main focus of this work is on the behaviour and performance of the IEEE 802.11 MAC layer when Radio over Fibre technology is used to distribute Radio Frequency signals from a Central Site to Remote Antenna Units. Data throughput impairments due to constraints imposed by the IEEE 802.11 MAC are considered in Single Mode Fibre systems. The results presented in this thesis are based on the current DCF access scheme specifications using both the Basic Access and RTS/CTS Access mechanisms (at the MAC layer), as well as TCP and UDP protocols (within the transport layer). It is shown that the length of the fibre is constricted to a maximum limit in a standard hybrid system. However, with minimal changes to the parameters of IEEE 802.11 standard this limit can be expanded. It is also realised that data throughput decreases with different rates (depending on parameters chosen) as fibre length increases. It has been observed that the network fails long before physical layer limitations set in due to the timeout values defined within the MAC protocol. In this thesis experimental enquiries are first used to provide a set of validation points before extending these results by simulations using the NS-2 platform. Mathematical approximations are then presented to these results that would allow designers of Radio over Fibre systems to quickly and accurately predict the data throughput and performance behaviour given the specific parameters of their network. Finally, two different strategies are investigated within an 802.11 Fibre Friendly MAC that significantly enhance the data throughput. Due to the common functionality of the MAC layer the basis of this work can be applied to a number of IEEE 802.11 systems, including 802.11a/b/g networks. To the knowledge of the author this is the first analysis of this kind for a long reach fibre system.
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Chen, Xiang. "Coherent Radio Over Fiber Links for Broadband Wireless Access Networks." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36129.

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The ever-increasing demand for high date rate is beyond what is provided by the present wireless and wired access networks. Radio-over-fiber (RoF) technology which can provide broadband wireless access has been considered the most practical and efficient solution. In recent years, RoF with coherent detection has been shown to have better performance than that with direct detection in terms of receiver sensitivity and spectral efficiency. However, RoF with coherent detection suffers from phase noise introduced from both the transmitter and local oscillator (LO) laser sources, which degrades the performance significantly. This study is focused on coherent RoF links for broadband wireless access networks. The thesis consists of four parts. In the first part, a new approach to cancel the phase noise and the unstable frequency difference introduced from the transmitter and LO laser sources based on digital signal processing (DSP) in an RoF link with coherent detection is presented. The proposed schemes rival the RoF link with direct detection in complexity while maintaining a high receiver sensitivity. In addition, a high spectral efficiency coherent RoF link with phase noise cancellation, which can detect both intensity- and phase- modulated signals carried by the same optical carrier, is studied and demonstrated. In the second part, to achieve full-duplex transmission and increase the capacity of an RoF link, radio over wavelength division multiplexing passive optical network (WDM-PON) is studied. To eliminate the requirements of light sources and wavelength management at the optical network units (ONUs), which reduces the cost and eases the installation for a radio over WDM-PON system, a new approach to reuse the downstream wavelength at the ONU with coherent detection and DSP at the optical line terminal (OLT) is investigated. The performance in terms of error vector magnitude (EVM) and bit rate error (BER) is evaluated for both downlink and uplink. In the scheme, the coherent detection improves the receiver sensitivity for the uplink and compensate for the degraded data transmission performance due to the utilization of a wavelength-reused downstream optical signal. Furthermore, since the future internet traffic will become highly symmetric, a symmetrical radio over a colorless WDM passive optical network (PON) with wavelength reuse based on polarization multiplexing and coherent detection is proposed and studied. In the third part, a coherent RoF link based on optical single sideband with no optical carrier (OSSB) modulation with low-cost free-running laser sources for ultra-dense wavelength division multiplexing passive optical networks (UDWDM-PONs) is studied. In a UDWDM-RoF-PON, the channel spacing is very small, thus a WDM filter may not be able to de-multiplex the ultra-dense channels. However, through coherent detection, the channel separation can be realized by using electrical filters at the output of the coherent receiver. In addition, to utilize the spectrum in each channel more efficiently, OSSB modulation is employed. In the proposed scheme, an RoF signal based OSSB modulation with coherent detection is experimentally demonstrated. The channel spacing can be as narrow as 3 GHz. Finally, for 5th generation wireless systems (5G), multi-input and multi-output (MIMO) is a key technology which can multiple the capacity. To seamlessly integrate MIMO into RoF links, it is required that an RoF link can transmit multiple wireless signals over a single wavelength. To enable 4 × 4 MIMO, in the fourth part, an RoF link to transmit four wireless signals with an identical microwave center frequency without using frequency-division multiplexing (FDM) over a single optical wavelength based on optical independent sideband (OISB) modulation and optical orthogonal modulation incorporating optical coherent detection and digital signal processing (DSP) is studied. To increase the spectral efficiency further, a novel high spectral efficiency (20.62 bit/s/Hz) RoF link based on coherent detection and DSP with the spectral efficiency improved by employing both intensity and phase modulation and polarization multiplexing to transmit four microwave signals over a single optical carrier is investigated.
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Books on the topic "Broadband Wireless Access [BWA]"

1

Bing, Benny. Broadband wireless access. New York: Kluwer Academic Publishers, 2002.

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Broadband wireless access. Boston: Kluwer Academic Publishers, 2000.

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Engels, Marc, and Frederik Petré. Broadband Fixed Wireless Access. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-34593-2.

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WiMAX: Technology for broadband wireless access. Chichester, UK: John Wiley & Sons, Ltd, 2007.

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Carothers, Todd. Broadband wireless access demystified, 2002: A report on the broadband wireless access market from the Telnecity Group. San Jose, CA] (2433 Downing Ave., San Jose 95128): Telnecity Group, 2002.

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OFDM towards fixed and mobile broadband wireless access. Boston, MA: Artech House, 2007.

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Residential broadband networks: XDSL, HFC, and fixed wireless access. Upper Saddle River, NJ: Prentice Hall, 1998.

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Santos, Raul Aquino, Arthur Edwards Block, and Victor Rangel Licea. Broadband wireless access networks for 4G: Theory, application, and experimentation. Hershey, PA: Information Science Reference, 2013.

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Lee, Byeong Gi. Broadband wireless access and local networks: Mobile WiMax and WiFi. Boston, Mass: Artech House, 2008.

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Broadband optical access networks: Emerging technologies and optical-wireless convergence. Hoboken, N.J: Wiley-Interscience, 2011.

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Book chapters on the topic "Broadband Wireless Access [BWA]"

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Engels, Marc. "The Need for BFWA." In Broadband Fixed Wireless Access, 1–16. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-34593-2_1.

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Petré, Frederik. "A Plethora of BFWA Standards." In Broadband Fixed Wireless Access, 17–28. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-34593-2_2.

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Petré, Frederik. "Unraveling the BFWA Propagation Environment." In Broadband Fixed Wireless Access, 29–59. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-34593-2_3.

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Chen, Hsiao-Hwa, and Mohsen Guizani. "Wireless Broadband Access." In Handbook of Computer Networks, 1200–1222. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118256114.ch75.

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Freeburg, Thomas A., Paul Odlyzko, and Gary D. Schulz. "MMIC Technology for Broadband Wireless Access." In Broadband Wireless Communications, 162–66. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1570-0_16.

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Cherubini, Giovanni. "Signal Processing for Network Access Technologies: An Overview." In Broadband Wireless Communications, 3–10. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1570-0_1.

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Kagoshima, K., K. Uehara, Y. Takatori, T. Hori, and K. Cho. "Broadband Wireless Access System Antennas: Concepts and Designs." In Broadband Wireless Communications, 149–61. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1570-0_15.

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Cornaglia, B., G. D’Aria, and R. Santaniello. "Radio Access to Multimedia Services: the Standardization Process." In Broadband Wireless Communications, 408–21. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1570-0_40.

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Engels, Marc. "Guaranteeing Quality-of-Service." In Broadband Fixed Wireless Access, 61–78. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-34593-2_4.

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Petré, Frederik. "Different PHYs Serve Different Needs." In Broadband Fixed Wireless Access, 79–99. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-34593-2_5.

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Conference papers on the topic "Broadband Wireless Access [BWA]"

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Shatri, Besnik, Ilir Imeri, and Arianit Maraj. "Broadband Wireless Access (BWA) Implementation in NGN Network." In 2008 International Conference on Communication Theory, Reliability, and Quality of Service (CTRQ). IEEE, 2008. http://dx.doi.org/10.1109/ctrq.2008.24.

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"GC14 WS — BWA: Globecom 2014 workshop — Broadband wireless access — Program." In 2014 IEEE Globecom Workshops (GC Wkshps). IEEE, 2014. http://dx.doi.org/10.1109/glocomw.2014.7063326.

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Ata, Osama W. "Broadband wireless access (BWA) over multi-channel multipoint distribution service (MMDS) frequency band." In 2006 1st European Conference on Antennas and Propagation (EuCAP). IEEE, 2006. http://dx.doi.org/10.1109/eucap.2006.4584754.

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"GC'12 Workshop - BWA: GC'12 Workshop: The 8th Broadband Wireless Access Workshop - Program." In 2012 IEEE Globecom Workshops (GC Wkshps). IEEE, 2012. http://dx.doi.org/10.1109/glocomw.2012.6477494.

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"GC14 WS — BWA: Globecom 2014 workshop — Broadband Wireless Access — Committees and welcome." In 2014 IEEE Globecom Workshops (GC Wkshps). IEEE, 2014. http://dx.doi.org/10.1109/glocomw.2014.7063327.

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Muhammad, N. A., T. A. Rahman, and S. K. A. Rahim. "The effects of foliage on 5.8GHz Broadband Fixed Wireless Access (BFWA)." In 2010 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE 2010). IEEE, 2010. http://dx.doi.org/10.1109/apace.2010.5719760.

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Bian, Y., and A. Nix. "Throughput and Coverage Analysis of a Multi-Element Broadband Fixed Wireless Access (BFWA) System in the Presence of Co-Channel Interference." In IEEE Vehicular Technology Conference. IEEE, 2006. http://dx.doi.org/10.1109/vtcf.2006.30.

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Fowler, T. "Broadband wireless access." In IET Conference on Next Generation Fixed Networks. IEE, 2006. http://dx.doi.org/10.1049/ic:20060421.

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Willis, M. J. "Enabling broadband wireless access." In IEE Two Day Conference. Getting the Most Out of the Radio Spectrum. IEE, 2002. http://dx.doi.org/10.1049/ic:20020262.

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Nidaira, K., T. Shirouzu, M. Baba, and K. Inoue. "Wireless IP access system for broadband access services." In 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577). IEEE, 2004. http://dx.doi.org/10.1109/icc.2004.1313182.

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Reports on the topic "Broadband Wireless Access [BWA]"

1

Seybold, Patricia. The Next Disruptive Technology: Wireless Broadband Data Access (WBDA). Boston, MA: Patricia Seybold Group, July 2002. http://dx.doi.org/10.1571/psgp7-3-02cc.

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