Fading channels with 1-bit output quantization: Optimal modulation, ergodic capacity and outage probability | IEEE Conference Publication | IEEE Xplore

Fading channels with 1-bit output quantization: Optimal modulation, ergodic capacity and outage probability


Abstract:

The achievable rate of communications systems depends on the quantization resolution at the receiver. Earlier work has shown that the capacity of real-valued AWGN channel...Show More

Abstract:

The achievable rate of communications systems depends on the quantization resolution at the receiver. Earlier work has shown that the capacity of real-valued AWGN channels with 1-bit output quantization is achieved with BPSK. This paper studies optimal modulation schemes, the ergodic capacity and the outage probability for complex-valued fading channels with 1-bit output quantization, assuming full channel knowledge at the receiver. It is shown that circular symmetry with at most one amplitude per phase is a necessary condition for optimal modulation. Circular-symmetric PSK achieves the ergodic capacity in case of Rayleigh fading. Considering the outage probability for Rayleigh fading, L-PSK with large L shows the best performance among conventional modulation schemes.
Date of Conference: 30 August 2010 - 03 September 2010
Date Added to IEEE Xplore: 30 September 2010
ISBN Information:
Conference Location: Dublin, Ireland

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