On the Low-SNR Capacity of Phase-Shift Keying with Hard-Decision Detection - Computer Science > Information TheoryReportar como inadecuado




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Abstract: The low-snr capacity of M-ary PSK transmission over both the additive whiteGaussian noise (AWGN) and fading channels is analyzed when hard-decisiondetection is employed at the receiver. Closed-form expressions for the firstand second derivatives of the capacity at zero snr are obtained. Thespectral-efficiency-bit-energy tradeoff in the low-snr regime is analyzed byfinding the wideband slope and the bit energy required at zero spectralefficiency. Practical design guidelines are drawn from theinformation-theoretic analysis. The fading channel analysis is conducted forboth coherent and noncoherent cases, and the performance penalty in thelow-power regime for not knowing the channel is identified.



Autor: Mustafa Cenk Gursoy

Fuente: https://arxiv.org/







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