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Journal articles on the topic 'Frequency Selective Broadband Channels'

Author: Grafiati

Published: 25 May 2024

Last updated: 18 July 2025

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1

Jiang, Ting, Maozhong Song, Xiaorong Zhu, and Xu Liu. "Channel Estimation for Broadband Millimeter Wave MIMO Systems Based on High-Order PARALIND Model." Wireless Communications and Mobile Computing 2021 (November 23, 2021): 1–12. http://dx.doi.org/10.1155/2021/6408442.

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Channel state information (CSI) is important to improve the performance of wireless transmission. However, the problems of high propagation path loss, multipath, and frequency selective fading make it difficult to obtain the CSI in broadband millimeter-wave (mmWave) system. Based on the inherent multidimensional structure of mmWave multipath channels and the correlation between channel dimensions, mmWave multiple input multiple output (MIMO) channels are modelled as high-order parallel profiles with linear dependence (PARALIND) model in this paper, and a new PARALIND-based channel estimation a

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Hu, Yuze, Mingyu Tong, Siyang Hu, Weibao He, Xiang’ai Cheng, and Tian Jiang. "Multidimensional engineered metasurface for ultrafast terahertz switching at frequency-agile channels." Nanophotonics 11, no. 7 (2022): 1367–78. http://dx.doi.org/10.1515/nanoph-2021-0774.

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Abstract The ability to actively manipulate free-space optical signals by using tunable metasurfaces is extremely appealing for many device applications. However, integrating photoactive semiconductors into terahertz metamaterials still suffers from a limited functionality. The ultrafast switching in picosecond timescale can only be operated at a single frequency channel. In the hybrid metasurface proposed here, we experimentally demonstrate a dual-optically tunable metaphotonic device for ultrafast terahertz switching at frequency-agile channels. Picosecond ultrafast photoswitching with a 100

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Semmar, A., M. Lecours, and H. T. Huynh. "Performance of coherent QPSK communications over frequency-selective fading channels for broadband PCS." Canadian Journal of Electrical and Computer Engineering 22, no. 2 (1997): 51–54. http://dx.doi.org/10.1109/cjece.1997.7101978.

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Boutalline, Mohammed, Belaid Bouikhalene, and Said Safi. "Channel Identification and Equalization based on Kernel Methods for Downlink Multicarrier-CDMA Systems." Journal of Electronic Commerce in Organizations 13, no. 2 (2015): 14–29. http://dx.doi.org/10.4018/jeco.2015040102.

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In this paper the authors are focused on channel identification and equalization for Multi-Carrier Code Division Multiple Access (MC-CDMA) system. For this, they identify the impulse response of two practical selective frequency fading channels called Broadband Radio Access Network (BRAN A and BRAN B) normalized by the European Telecommunications Standards Institute (ETSI). To identify the channel parameters, they have the positive definite kernels to build on algorithm. The simulations show that the presented method confirms the good performance for different SNR values. In part of equalizati

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Perov, Sergey Yu, Olga V. Belaya, Quirino Balzano, and Nina B. Rubtsova. "The problems of mobile communication electromagnetic field exposure assessment today and tomorrow." Russian Journal of Occupational Health and Industrial Ecology 60, no. 9 (2020): 597–99. http://dx.doi.org/10.31089/1026-9428-2020-60-9-597-599.

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New and necessary improvements of electromagnetic exposure assessment principles and methods are considered and presented. The electromagnetic field exposure assessment is the physical basis for hygienic and biological research and needs s to consider the new technological features of emerging 5G mobile systems in addition to existing 2-4G systems. The new generation of telecommunication networks will cause significantly novel electromagnetic field exposure, in particular for time-frequency and spatial parameters. A complex exposure assessment based on refined broadband measurements seems to b

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Fateh, Rachid, Anouar Darif, Ahmed Boumezzough, Said Safi та Miloud Frikel. "A Novel Kernel Algorithm for Finite Impulse Response Channel Identiﬁcation". Journal of Telecommunications and Information Technology, № 2 (29 червня 2023): 84–93. http://dx.doi.org/10.26636/jtit.2023.169823.

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    Over the last few years, kernel adaptive ﬁlters have gained in importance as the kernel trick started to be used in classic linear adaptive ﬁlters in order to address various regression and time-series prediction issues in nonlinear environments.In this paper, we study a recursive method for identifying ﬁnite impulse response (FIR) nonlinear systems based on binary-value observation systems. We also apply the kernel trick to the recursive projection (RP) algorithm, yielding a novel recursive algorithm based on a positive deﬁnite kernel. For purposes, our approach is

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Zidane, Mohammed, Said Safi, Mohamed Sabri, and Ahmed Boumezzough. "Bit Error Rate Analysis of MC-CDMA Systems with Channel Identification Using Higher Order Cumulants." Indonesian Journal of Electrical Engineering and Computer Science 1, no. 1 (2016): 138. http://dx.doi.org/10.11591/ijeecs.v1.i1.pp138-152.

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The aim of this paper is to contribute to study the problems of the blind identification and equalization using Higher Order Cumulants (HOC) in downlink Multi-Carrier Code Division Multiple Access (MC-CDMA) systems. For this problem, two blind algorithms based on HOC for Broadband Radio Access Network (BRAN) channel are proposed. In the one hand, to assess the performance of these approaches to identify the parameters of non minimum phase channels, we have considered two theoretical channels, and one practical frequency selective fading channel called BRAN C, driven by non gaussian signal. In

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Buhaiov, M. V. "Spectrum Smoothing Method for OFDM Signals Detection in Frequency Selective Channel." Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 85 (June 30, 2021): 33–40. https://doi.org/10.20535/radap.2021.85.33-40.

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Orthogonal Frequency Division Multiplexing (OFDM) technology has become widespread in civil and military radio systems, especially in channels with frequency selective fading. Due to the large number of OFDM signal schemes, an urgent task for modern radio monitoring systems is development of methods and algorithms for detecting such signals that will be stable in the uncertainty of OFDM signal structure and electromagnetic environment. At the stage of detection, the characteristic feature of OFDM signal is presence of frequency channels in its spectrum envelope. In this research, an algorithm

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Fateh, Rachid, Anouar Darif, and Said Safi. "Performance Evaluation of MC-CDMA Systems with Single User Detection Technique using Kernel and Linear Adaptive Method." Journal of Telecommunictions and Information Technology 4, no. 2021 (2021): 1–11. http://dx.doi.org/10.26636/jtit.2021.151621.

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Among all the techniques combining multi-carrier modulation and spread spectrum, the multi-carrier code division multiple access (MC-CDMA) system is by far the most widely studied. In this paper, we present the performance of the MC-CDMA system associated with key single-user detection techniques. We are interested in problems related to identification and equalization of mobile radio channels, using the kernel method in Hilbert space with a reproducing kernel, and a linear adaptive algorithm, for MC-CDMA systems. In this context, we tested the efficiency of these algorithms, considering pract

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Yan, Qiuna, Yu Sun, and Dian-Wu Yue. "LOS-Based Equal Gain Transmission and Combining in General Frequency-Selective Ricean Massive MIMO Channels." Electronics 8, no. 1 (2019): 79. http://dx.doi.org/10.3390/electronics8010079.

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In general frequency-selective Ricean fading environments with doubly-ended spatial correlation, this paper investigates the spectral efficiency of a broadband massive multiple-input multiple-output (MIMO) system. In particular, in order to reduce overhead of channel estimation effectively, it proposes a scheme of equal gain transmission and combining, which is only based on line- of-sight (LOS) component and has low hardware complexity. With the scheme, several interesting transmit power scaling properties without and with spatial correlation are derived when the number of antennas at the tra

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Fateh, Rachid, Anouar Darif, and Said Safi. "An Extended Version of the Proportional Adaptive Algorithm Based on Kernel Methods for Channel Identification with Binary Measurements." Journal of Telecommunications and Information Technology 3, no. 2022 (2022): 47–58. http://dx.doi.org/10.26636/jtit.2022.161122.

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In recent years, kernel methods have provided an important alternative solution, as they offer a simple way of expanding linear algorithms to cover the non-linear mode as well. In this paper, we propose a novel recursive kernel approach allowing to identify the finite impulse response (FIR) in non-linear systems, with binary value output observations. This approach employs a kernel function to perform implicit data mapping. The transformation is performed by changing the basis of the data In a high-dimensional feature space in which the relations between the different variables become lineariz

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Perov, Sergey Yu, and Olga V. Belaya. "Instrumental assessment of mobile communication base station electromagnetic field exposure." Russian Journal of Occupational Health and Industrial Ecology 60, no. 11 (2020): 853–56. http://dx.doi.org/10.31089/1026-9428-2020-60-11-853-856.

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Introduction. Monitoring and ensuring safe operating conditions of modern base stations for occupational and general public exposure is relevant with the use of methods for measuring electromagnetic fields, which allow to assess the contribution of different sources to the overall level of the electromagnetic background, taking into account the dynamic features of base stations and the spectral electromagnetic characteristics. The aim of study is the levels of electromagnetic fields assessment from modern base stations using broadband and selective measurement methods, as well as the possibili

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Zidane, Mohammed, Said Safi, Mohamed Sabri, Ahmed Boumezzough, and Miloud Frikel. "Adaptive Algorithms Versus Higher Order Cumulants for Identification and Equalization of MC-CDMA." Journal of Telecommunications and Information Technology, no. 3 (September 30, 2014): 53–62. http://dx.doi.org/10.26636/jtit.2014.3.1034.

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In this paper, a comparative study between a blind algorithm, based on higher order cumulants, and adaptive algorithms, i.e. Recursive Least Squares (RLS) and Least Mean Squares (LMS) for MultiCarrier Code Division Multiple Access (MC-CDMA) systems equalization is presented. Two practical frequency-selective fading channels, called Broadband Radio Access Network (BRAN A, BRAN B) normalized for MC-CDMA systems are considered. In the part of MC-CDMA equalization, the Zero Forcing (ZF) and the Minimum Mean Square Error (MMSE) equalizer techniques were used. The simulation results in noisy environ

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Zhang, Zilong, Xiaodong Xu, and Yanan Wu. "Transmit Beamforming Optimization Design for Broadband Multigroup Multicast System." Mathematical Problems in Engineering 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/563863.

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Spectral efficient transmission techniques are necessary and promising for future broadband wireless communications, where the quality of service (QoS) and/or max-min fair (MMF) of intended users are often considered simultaneously. In this paper, both the QoS problem and the MMF problem are investigated together for transmit beamforming in broadband multigroup multicast channels with frequency-selective fading characters. We first present a basic algorithm by directly using the results in frequency-flat multigroup multicast systems (Karipidis et al., 2008), namely, the approximation algorithm

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Hao, Wenhui, Yi Peng, Shaohua Wang, and Xia Liu. "RF Frequency Selective Switch by Multiple PMIM Conversions." Applied Sciences 13, no. 4 (2023): 2472. http://dx.doi.org/10.3390/app13042472.

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Nowadays, broadband and multi-channel radio frequency (RF) processing has been widely used in communication, radar, countermeasure, and other applications. At present, multiple-input and multiple-output (MIMO)-oriented microwave photonic signal processing technology is relatively scarce, so this paper proposes an RF frequency selective switch (FSS) based on multiple phase modulation to intensity modulation (PMIM) conversions. PMIM conversion has been used in narrowband microwave photonic filtering in the past. We extend it to a wideband and arbitrarily reconfigurable RF spectrum processing uni

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Cobacho-Ruiz, Pablo, Francisco Javier Cañete, Eduardo Martos-Naya, and Unai Fernández-Plazaola. "OFDM System Design for Measured Ultrasonic Underwater Channels." Sensors 22, no. 15 (2022): 5703. http://dx.doi.org/10.3390/s22155703.

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In this paper, we present the development of a multicarrier modulation system of low complexity for broadband underwater acoustic communications (UAC), whose frequency band is located in the ultrasonic range, specifically between 32 kHz and 128 kHz. Underwater acoustic channels are recognized among the most hostile communication channels due to their strong time and frequency selectivity and, hence, the design of high-performance systems is a challenge that is difficult to resolve at the present time with state-of-art technology. The aim of the proposed system is to reach a reasonable bit rate

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Safi, Said, Miloud Frikel, Abdelouhab Zeroual, and Mohammed M’Saad. "Higher Order Cumulants for Identification and Equalization of Multicarrier Spreading Spectrum Systems." Journal of Telecommunications and Information Technology, no. 2 (June 27, 2023): 74–84. http://dx.doi.org/10.26636/jtit.2011.2.1148.

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This paper describes two blind algorithms for multicarrier code division multiple access (MC-CDMA) system equalization. In order to identify, blindly, the impulse response of two practical selective frequency fading channels called broadband radio access network (BRAN A and BRAN E) normalized for MC-CDMA systems, we have used higher order cumulants (HOC) to build our algorithms. For that, we have focussed on the experimental channels to develop our blind algorithms able to simulate the measured data with high accuracy. The simulation results in noisy environment and for different signal to noi

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18

Xing, Kang, Shiyan Li, Zhijie Qu, and Xiaojuan Zhang. "Time-Domain Electromagnetic Noise Suppression Using Multivariate Variational Mode Decomposition." Remote Sensing 16, no. 5 (2024): 806. http://dx.doi.org/10.3390/rs16050806.

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Noise suppression is essential in time-domain electromagnetic (TDEM) data processing and interpretation. TDEM data are typically in broadband signal, which makes it difficult to separate the signal in the whole frequency band. The conventional methods tend to process data trace by trace, ignoring the lateral continuity between channels. This paper proposes a workflow based on multivariate variational mode decomposition (MVMD) and multivariate detrended fluctuation analysis (MDFA) to deal with the noise in 2-D TDEM data. The proposed method initially employs MVMD to decompose TDEM signals into

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19

Liu, Tao, Yong-Jian Wang, and Yu-Fei Zhao. "Channel Estimation Based on Compressed Sensing Technique for Low-Voltage Power Line Communication." Journal of Nanoelectronics and Optoelectronics 13, no. 10 (2018): 1468–72. http://dx.doi.org/10.1166/jno.2018.2468.

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Broadband low-voltage power line communication (PLC) has many advantages including less investment cost, construction speed, and convenient access. Since the orthogonal frequency division multiplexing (OFDM) technology has strong anti-jamming and anti-frequency selective fading characteristics naturally it becomes a better low voltage power line communication solution. We proposed an OFDM channel estimation method based on compressed sensing (CS) technique according to the channel characteristics of low-voltage power lines. CS algorithm in OFDM system was discussed and an orthogonal matching p

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Dobreva, Marina S., William E. O'Neill, and Gary D. Paige. "Influence of aging on human sound localization." Journal of Neurophysiology 105, no. 5 (2011): 2471–86. http://dx.doi.org/10.1152/jn.00951.2010.

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Errors in sound localization, associated with age-related changes in peripheral and central auditory function, can pose threats to self and others in a commonly encountered environment such as a busy traffic intersection. This study aimed to quantify the accuracy and precision (repeatability) of free-field human sound localization as a function of advancing age. Head-fixed young, middle-aged, and elderly listeners localized band-passed targets using visually guided manual laser pointing in a darkened room. Targets were presented in the frontal field by a robotically controlled loudspeaker asse

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Nwanekezie, Nnamdi, Oluyomi Simpson, Gbenga Owojaiye, and Yichuang Sun. "Co-Efficient Vector Based Differential Distributed Quasi-Orthogonal Space Time Frequency Coding." Sensors 23, no. 17 (2023): 7540. http://dx.doi.org/10.3390/s23177540.

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Distributed space time frequency coding (DSTFC) schemes address problems of performance degradation encountered by cooperative broadband networks operating in highly mobile environments. Channel state information (CSI) acquisition is, however, impractical in such highly mobile environments. Therefore, to address this problem, designers focus on incorporating differential designs with DSTFC for signal recovery in environments where neither the relay nodes nor destination have CSI. Traditionally, unitary matrix-based differential designs have been used to generate the differentially encoded symb

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Chien, Wei, Tzong-Tyng Hsieh, Chien-Ching Chiu, Yu-Ting Cheng, Yang-Han Lee, and Qiang Chen. "Theoretical Derivation and Optimization Verification of BER for Indoor SWIPT Environments." Symmetry 12, no. 7 (2020): 1185. http://dx.doi.org/10.3390/sym12071185.

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Symmetrical antenna array is useful for omni bearing beamforming adjustment with multiple receivers. Beam-forming techniques using evolution algorithms have been studied for multi-user resource allocation in simultaneous wireless information and power transfer (SWIPT) systems. In a high-capacity broadband communication system there are many users with wearable devices. A transmitter provides simultaneous wireless information and power to a particular receiver, and the other receivers harvest energy from the radio frequency while being idle. In addition, the ray bounce tracking method is used t

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Wang, Xianhai, Teng Wang, Chuan Yin, Jun Han, Qiao Meng, and Chen Wang. "Broadband Spectral Analysis Algorithm with High-Frequency Resolution for Elimination of Overlap Interference between Adjacent Channels." Applied Sciences 11, no. 21 (2021): 10262. http://dx.doi.org/10.3390/app112110262.

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Spectral lines can be analysed to determine the physical properties of molecular clouds and the astrochemical processes in the formation area of massive stars. To improve the observation technology of radio astronomy, this paper proposes and compares two spectral analysis algorithms (improved weighted overlap-add (IWOLA) + FFT and IWOLA + weighted overlap-add (WOLA)). The proposed algorithms can obtain an ultra-high-frequency resolution for real-valued wideband signals, eliminate the signal overlapping interference between adjacent channels, substantially decrease the required hardware resourc

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Qiu, Chencheng, Liu Liu, Botao Han, Jiachi Zhang, Zheng Li, and Tao Zhou. "Broadband Wireless Communication Systems for Vacuum Tube High-Speed Flying Train." Applied Sciences 10, no. 4 (2020): 1379. http://dx.doi.org/10.3390/app10041379.

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A vactrain (or vacuum tube high-speed flying train) is considered as a novel proposed rail transportation approach in the ultra-high-speed scenario. The maglev train can run with low mechanical friction, low air resistance, and low noise mode at a speed exceeding 1000 km/h inside the vacuum tube regardless of weather conditions. Currently, there is no research on train-to-ground wireless communication system for vactrain. In this paper, we first summarize a list of the unique challenges and opportunities associated with the wireless communication for vactrain, then analyze the bandwidth and Qu

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Tuzlukov, Vyacheslav. "Performance of Generalized Receiver Employed by Broadband Multicarrier DS-CDMA System Using Space-Time Spreading-Assisted Transmit Diversity." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (September 29, 2021): 152–71. http://dx.doi.org/10.37394/23204.2021.20.21.

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In this paper the multicarrier direct-sequence code-division multiple access (MC DS-CDMA) using space-time spreading assisted transmit diversity is investigated in the context of broadband wireless communi-cations systems constructed based on the generalized approach to signal processing in noise over frequency-se-lective Rayleigh fading channels. We consider the issue of parameter design for the sake of achieving high-ef-ficiency communications in various dispersive environments. In contrast to the conventional MC DS-CDMA wireless communication system employing the time (T)-domain spreading o

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Gui, Guan, Li Xu, Lin Shan, and Fumiyuki Adachi. "Compressive Sensing Based Bayesian Sparse Channel Estimation for OFDM Communication Systems: High Performance and Low Complexity." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/927894.

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In orthogonal frequency division modulation (OFDM) communication systems, channel state information (CSI) is required at receiver due to the fact that frequency-selective fading channel leads to disgusting intersymbol interference (ISI) over data transmission. Broadband channel model is often described by very few dominant channel taps and they can be probed by compressive sensing based sparse channel estimation (SCE) methods, for example, orthogonal matching pursuit algorithm, which can take the advantage of sparse structure effectively in the channel as for prior information. However, these

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Fateh, Rachid, Anouar Darif, and Said Safi. "Channel Identification of Non-linear Systems with Binary-Valued Output Observations Based on Positive Definite Kernels." E3S Web of Conferences 297 (2021): 01020. http://dx.doi.org/10.1051/e3sconf/202129701020.

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Nowadays, the kernel methods are increasingly developed, they are a significant source of advances, not only in terms of computational cost but also in terms of the obtained efficiencies in solving complex tasks, they are founded on the theory of reproducing kernel Hilbert spaces (RKHS). In this paper, we propose an algorithm for recursive identification of finite impulse response (FIR) nonlinear systems, whose outputs are detected by binary value sensors. This algorithm is based on a nonlinear transformation of the data using a kernel function. This transformation performs a basic change that

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Puzyrev, P. I., A. N. Lyashuk, and S. A. Zavyalov. "Broadband Instantaneous Frequency Measurement Receiver." Herald of the Siberian State University of Telecommunications and Information Science 18, no. 2 (2023): 3–12. https://doi.org/10.55648/1998-6920-2024-18-2-3-12.

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This paper proposes a structure of a broadband instantaneous frequency measurement receiver consisting of an analog correlator and a digital frequency estimation calculation unit. A feature of this structure is the use of only two ADCs regardless of the width of the operating frequency range. Expansion of the frequency range is achieved through the use of channels with comparators, and each channel with a comparator doubles the width of the operating frequency range. The procedure for calculating the main characteristics of a IFM receiver is given: delay time and the number of channels with co

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Seddik, K., and K. J. R. Liu. "Distributed Space-Frequency Coding over Broadband Relay Channels." IEEE Transactions on Wireless Communications 7, no. 11 (2008): 4748–59. http://dx.doi.org/10.1109/t-wc.2008.071205.

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G. P. Neto, José Jaime, Antonio Luiz P. S. Campos, Ruann Victor de A. Lira, Alfredo Gomes Neto, and Maurício W. B. Silva. "Absorb/Transmit Broadband Type Frequency Selective Surface." Journal of Microwaves, Optoelectronics and Electromagnetic Applications 22, no. 1 (2023): 1–12. http://dx.doi.org/10.1590/2179-10742023v22i1268430.

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Xi, Xinyu, Dehong Li, Dongwen Chen, and Yong Li. "Application of frequency optimization neural network method on power line communication." E3S Web of Conferences 300 (2021): 01018. http://dx.doi.org/10.1051/e3sconf/202130001018.

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The quality of broadband power line carrier communication mainly depends on the carrier communication frequency. However, there is a lack of fast and effective optimal carrier frequency selection method. One frequency selection method based on frequency point optimization neural network is proposed by this paper. This method combines transmission line theory and voltage partial reflection theory to build a power line carrier channel mathematical model of the distribution network. The input frequency point sample set is used as the training set of the frequency point optimization neural network

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Jibing Wang, E. Biglieri, and Kung Yao. "Asymptotic performance of space-frequency codes over broadband channels." IEEE Communications Letters 6, no. 12 (2002): 523–25. http://dx.doi.org/10.1109/lcomm.2002.806463.

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Gasilin, D. V. "IMPROVING OF THE FREQUENCY-SELECTIVE BROADBAND RECIVER STRUCTURE." Electronic engineering. Series 2. Semiconductor devices 248, no. 1 (2018): 68–71. http://dx.doi.org/10.36845/2073-8250-2018-248-1-68-71.

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Qian, Guangxu, Junming Zhao, Xiaomei Ren, et al. "Switchable Broadband Dual-Polarized Frequency-Selective Rasorber/Absorber." IEEE Antennas and Wireless Propagation Letters 18, no. 12 (2019): 2508–12. http://dx.doi.org/10.1109/lawp.2019.2941661.

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Loof, Joseph L., and Thomas G. Pratt. "Frequency-Hopped Signal Source Identification in Frequency-Selective Channels." IEEE Transactions on Aerospace and Electronic Systems 55, no. 6 (2019): 3316–29. http://dx.doi.org/10.1109/taes.2019.2907392.

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Schober, R., L. H. J. Lampe, W. H. Gerstacker, and S. Pasupathy. "Modulation diversity for frequency-selective fading channels." IEEE Transactions on Information Theory 49, no. 9 (2003): 2268–76. http://dx.doi.org/10.1109/tit.2003.815786.

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Shayevitz, O., and M. Feder. "Universal Decoding for Frequency-Selective Fading Channels." IEEE Transactions on Information Theory 51, no. 8 (2005): 2770–90. http://dx.doi.org/10.1109/tit.2005.851741.

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Gore, D., S. Sandhu, and A. Paulraj. "Delay diversity code for frequency selective channels." Electronics Letters 37, no. 20 (2001): 1230. http://dx.doi.org/10.1049/el:20010860.

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Malik, Wasim. "MIMO capacity convergence in frequency-selective channels." IEEE Transactions on Communications 57, no. 2 (2009): 353–56. http://dx.doi.org/10.1109/tcomm.2009.02.070105.

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Wing Seng Leon, U. Mengali, and D. P. Taylor. "Equalization of linearly frequency-selective fading channels." IEEE Transactions on Communications 45, no. 12 (1997): 1501–3. http://dx.doi.org/10.1109/26.650220.

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Hu, Jun, and Tolga Duman. "Cooperation over frequency-selective fading relay channels." IEEE Transactions on Wireless Communications 7, no. 12 (2008): 5072–81. http://dx.doi.org/10.1109/t-wc.2008.071141.

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Zakharov, Y. V., and T. C. Tozer. "Linear multiuser detector for frequency selective channels." Electronics Letters 36, no. 12 (2000): 1081. http://dx.doi.org/10.1049/el:20000767.

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Chen, Bo, Qunfeng Dong, Biao Cao, Weile Zhai, and Yongsheng Gao. "Broadband Microwave Photonic Channelizer with 18 Channels Based on Acousto-Optic Frequency Shifter." Photonics 10, no. 2 (2023): 107. http://dx.doi.org/10.3390/photonics10020107.

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A microwave photonic channelizer can achieve instantaneous reception of ultra-wideband signals and effectively avoid electronic bottleneck; therefore, it can be perfectly applied to a wideband radar system and electronic warfare. In channelization schemes based on an optical frequency comb (OFC), the number of comb lines usually depends on that of the sub-channels. In order to improve the utilization rate of the comb lines of OFC, we propose a scheme to shift the frequency of OFC by using an acousto-optic frequency shifter (AOFS), which can obtain three times the number of sub-channels of the

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Tulino, Antonia M., Giuseppe Caire, Shlomo Shamai, and Sergio Verdu. "Capacity of Channels With Frequency-Selective and Time-Selective Fading." IEEE Transactions on Information Theory 56, no. 3 (2010): 1187–215. http://dx.doi.org/10.1109/tit.2009.2039041.

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Feteiha, M. F., and M. Uysal. "Cooperative transmission for broadband vehicular networks over doubly selective fading channels." IET Communications 6, no. 16 (2012): 2760–68. http://dx.doi.org/10.1049/iet-com.2012.0115.

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Friedlander, B., and A. Zeira. "Detection of broadband signals in frequency and time dispersive channels." IEEE Transactions on Signal Processing 44, no. 7 (1996): 1613–22. http://dx.doi.org/10.1109/78.510610.

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Li, Shaobo, Anni Liu, Xiang Ma, et al. "Broadband Instantaneous Frequency Measurement Using Frequency-to-Time Mapping and Channelization." Photonics 11, no. 8 (2024): 697. http://dx.doi.org/10.3390/photonics11080697.

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Abstract:

A photonic instantaneous microwave frequency measurement scheme based on frequency-to-time mapping and channelization is proposed. An unknown signal is divided into four channels and mixed with a broadband linear frequency-modulated signal. The frequency information is converted to the time domain, and the frequency measurement range has been expanded due to channelization. A simulation system has been constructed to demonstrate the effectiveness of the proposed method. A proof-of-concept experimental result shows that the frequency measurement errors can be kept in 20 MHz with a 10 MHz resolu

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Alamdar, Saeid, Karim Mohammadpour-Aghdam, Hossein Khalili, and Mahmoud Mohammad-Taheri. "A miniaturized broadband monopulse comparator with all DELTA channels nulling in Ku band." International Journal of Microwave and Wireless Technologies 10, no. 9 (2018): 1035–41. http://dx.doi.org/10.1017/s1759078718001071.

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AbstractA compact monopulse comparator with complete nulling in all DELTA channels is designed and fabricated. The proposed comparator has small dimension and consists of interconnections of four broadband branch-line couplers and several 90° phase shifters with multistage Schiffman coupled-lines. This comparator has been characterized by its eight-portS-parameters to generate the SUM and DELTA channel frequency responses. Over 30-dB null depth was achieved in DELTA channels across the SUM channels in pass band from 14.8 to 18.2 GHz frequency range.

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JIAO, Jian, Nianxi XU, Xin CHEN, and Jinsong GAO. "Broadband frequency selective surface based on composite coupling structure." Optics and Precision Engineering 30, no. 7 (2022): 773–79. http://dx.doi.org/10.37188/ope.20223007.0773.

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Alonso-Gonzalez, Leticia, Samuel Ver-Hoeye, Miguel Fernandez-Garcia, and Fernando Las-Heras Andres. "Broadband Flexible Fully Textile-Integrated Bandstop Frequency Selective Surface." IEEE Transactions on Antennas and Propagation 66, no. 10 (2018): 5291–99. http://dx.doi.org/10.1109/tap.2018.2858141.

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