Relevant bibliographies by topics / Π/4 DQPSK

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  1. Journal articles

Academic literature on the topic 'Π/4 DQPSK'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Π/4 DQPSK"

1

Wu, Yan Jun, Gang Fu та Peng Yu. "The Application of DFT Technology in Soft Demodulation of π/4-DQPSK Signals". Applied Mechanics and Materials 644-650 (вересень 2014): 4439–42. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.4439.

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Presented to the π / 4 differential quaternary phase shift keying signal (π/4-DQPSK) using the discrete Fourier transform (DFT) for software demodulation algorithm in consideration of the actual received waveform into transition to π/4-DQPSK District and stable region, and only the waveform sampling point DFT transform the region stable recovery decision. simulation gives the demodulation method to achieve the same differential demodulation relatively simple structure, and the anti-noise in the signal to noise ratio greater than 3dB better performance than the differential demodulation performance, expected the algorithm is applied π/4-DQPSK software radio receiver design.
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2

Zhu, Hong Li, та Xia Sun. "Design and Realization of π／4-DQPSK Modulation Circuit Based on FPGA". Advanced Materials Research 490-495 (березень 2012): 402–6. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.402.

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Technology of digital modulation plays an important role in digital communication system, the combination of digital communication technology and FPGA is a certain trend. This paper designs and realizes a new π／4-DQPSK modulator based on FPGA. The simulation result provides the correction of the design. With simple solution, high integration and high reliability, this π／4-DQPSK modulator can be widely used in digital communication field.
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3

Li, Guo Quan, Ke Tang, Jin Zhao Lin, et al. "Exploration of Modulation and Demodulation for Body Area Networks." Applied Mechanics and Materials 427-429 (September 2013): 2558–61. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.2558.

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Modulation and demodulation are two important parts in BAN baseband transmission systems. Different demodulation algorithms may affect the BER performance of the entire system seriously. Referring to IEEE 802.15.6 BAN standard, theoretical analysis and algorithm design of the modulation and demodulation for π/2-DBPSK and π/4-DQPSK is carried out and simulation results of BER performance are presented in this paper. In AWGN channel, both modulations achieve good performance, and performance degradation of π/4-DQPSK happens in multipath channel which may not satisfy the requirements. Adaptive modulation is considered to solve this problem by choosing different modulation scheme according to channel quality.
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4

Abu-Dayya, A. A., та N. C. Beaulieu. "Diversity π/4-DQPSK on microcellular interference channels". IEEE Transactions on Communications 44, № 10 (1996): 1289–97. http://dx.doi.org/10.1109/26.539769.

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5

Miller, L. E., та J. S. Lee. "BER expressions for differentially detected π/4 DQPSK modulation". IEEE Transactions on Communications 46, № 1 (1998): 71–81. http://dx.doi.org/10.1109/26.655405.

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6

Kwak, Jaemin. "Implementation of π/4-DQPSK Modem for Maritime Digital Communication in VHF Band". Journal of Korea Navigation Institute 18, № 6 (2014): 541–45. http://dx.doi.org/10.12673/jant.2014.18.6.541.

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7

Mao Yu та K. Feher. "π/4-FQPSK: an efficiency improved, standardized π/4-DQPSK compatible modulation/nonlinearly amplified RF wireless solution". IEEE Transactions on Broadcasting 42, № 2 (1996): 95–101. http://dx.doi.org/10.1109/11.506825.

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8

Kumar, Prashant, та Preetam Kumar. "Performance Evaluation of $$\pi /4$$ π / 4 -DQPSK OFDM over Underwater Acoustic Channels". Wireless Personal Communications 91, № 3 (2016): 1137–52. http://dx.doi.org/10.1007/s11277-016-3517-0.

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9

Jinsoup Joung та G. L. Stuber. "Frequency offset estimation algorithm for π/4-DQPSK TDMA mobile radio". IEEE Transactions on Vehicular Technology 49, № 5 (2000): 1885–92. http://dx.doi.org/10.1109/25.892591.

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10

O’Droma *, M. S., та M. Keaveney. "EVM measurement of modulation fidelity of π/4 DQPSK baseband modulators". International Journal of Electronics 91, № 6 (2004): 377–84. http://dx.doi.org/10.1080/00207210410001712156.

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