How Good is Phase-Shift Keying for Peak-Limited Rayleigh Fading Channels in the Low-SNR Regime?
<|reference_start|>How Good is Phase-Shift Keying for Peak-Limited Rayleigh Fading Channels in the Low-SNR Regime?: This paper investigates the achievable information rate of phase-shift keying (PSK) over frequency non-selective Rayleigh fading channels without channel state information (CSI). The fading process exhibits general temporal correlation characterized by its spectral density function. We consider both discrete-time and continuous-time channels, and find their asymptotics at low signal-to-noise ratio (SNR). Compared to known capacity upper bounds under peak constraints, these asymptotics usually lead to negligible rate loss in the low-SNR regime for slowly time-varying fading channels. We further specialize to case studies of Gauss-Markov and Clarke's fading models.<|reference_end|>
@article{zhang2005how,
    title={How Good is Phase-Shift Keying for Peak-Limited Rayleigh Fading Channels
  in the Low-SNR Regime?},
    author={Wenyi Zhang and J. Nicholas Laneman},
    journal={arXiv preprint arXiv:cs/0508121},
    year={2005},
    archivePrefix={arXiv},
    eprint={cs/0508121},
    primaryClass={cs.IT math.IT}
}