Results 181 to 190 of about 12,277 (211)
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Constrained capacity of the AWGN channel
Proceedings. 1998 IEEE International Symposium on Information Theory (Cat. No.98CH36252), 2002The shortest possible code length of codes on the AWGN channel which attain some prescribed error rate for given code rate and signal-to-noise ratio is considered.
Lazic, Dejan +2 more
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Image distortion IN AWGN communication channel
2012 Ninth International Conference on Wireless and Optical Communications Networks (WOCN), 2012The effect of channel bit error rate on the distortion of the image transmitted on an AWGN channel has been considered and a statistical relationship between the two has been presented and verified by simulation.
exaly +3 more sources
A modified design of APSK constellations for AWGN channel
2016 IEEE/CIC International Conference on Communications in China (ICCC), 2016We consider the power constraint equiprobable uniformly spaced amplitude and phase-shift keying (APSK) constellations capacity and Euclidean distance under additive white Gaussian noise (AWGN) channel. Conventional APSK constellations construction schemes mainly focus on closing the gap between APSK and Gaussian channel capacity or maximizing the ...
Siming Peng +3 more
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Signaling Through AWGN Channel
2020For the transmit filter with impulse response given in Fig. 7.1, draw the output of the matched filter.
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A prefiltering approach to frequency offset estimation in AWGN
2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003A new technique is proposed in the estimation of the frequency offset present in received communication signals imbedded in additive white Gaussian noise (AWGN) channels. This method consists of applying an extra filtering operation to the received signal after matched filtering and before the application of any frequency offset estimator. A new Cramer-
Mohamed Rezki +2 more
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Asymptotically optimum detector of an unknown sinusoid in AWGN
[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991A general approach is proposed to resolve the wideband detection problem, which utilizes data in the correlation domain via autoregressive modeling. The structures of Gaussian autoregressive processes are reviewed and applied to the modeling of a sinusoid in additive white Gaussian noise (AWGN).
Kiseon Kim, Andreas Polydoros
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Performances of coherent and noncoherent DLL in AWGN channel
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525), 2002We propose a new approach to study the performance of coherent and noncoherent delay lock loop in the AWGN channel. The analytical expression of the mean square tracking error is derived for the coherent scheme and compared to the noncoherent one. The impact of acquisition errors and the effect of the early late gate spacing are also investigated.
Hatem Boujemaa, Mohamed Siala 0001
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Improved Fountain Codes for BI-AWGN Channels
2017 IEEE Wireless Communications and Networking Conference (WCNC), 2017While gaining increasing popularity, fountain codes, including Luby transform (LT) codes and their extension called Raptor codes, are known to perform poorly over noisy channels. In this paper, we present a method which gives new output degree distributions that can significantly improve the decoding performance of these codes in binary input- additive
Amrit Kharel, Lei Cao 0001
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RA Codes Achieve AWGN Channel Capacity
1999In ref. [3] we introduced a simplified ensemble of serially concatenated "turbo-like" codes which we called repeat-accumulate, or RA codes. These codes are very easy to decode using an iterative decoding algorithm derived from belief propagation on the appropriate Tanner graph, yet their performance is scarcely inferior to that of full-fledged turbo ...
Jin, Hui, McEliece, Robert J.
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Block and decoded error probabilities of DPSK in AWGN
IEEE Transactions on Communications, 1994In this letter, we consider the error correlation in differential phase-shift keying (DPSK) demodulation in terms of its effects on the block and decoded error probabilities. The exact block and decoded error probabilities are derived and computed for additive white Gaussian noise (AWGN).
Qiang Wang 0013 +3 more
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