One-Bit Quantizers for Fading Channels

Tobias Koch; Amos Lapidoth

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arXiv · 1112.5314

One-Bit Quantizers for Fading Channels

Tobias Koch·Amos Lapidoth

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Abstract

We study channel capacity when a one-bit quantizer is employed at the output of the discrete-time average-power-limited Rayleigh-fading channel. We focus on the low signal-to-noise ratio regime, where communication at very low spectral efficiencies takes place, as in Spread Spectrum and Ultra-Wideband communications. We demonstrate that, in this regime, the best one-bit quantizer does not reduce the asymptotic capacity of the coherent channel, but it does reduce that of the noncoherent channel.

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Tobias Koch, Amos Lapidoth. 2011-12-22. One-Bit Quantizers for Fading Channels. https://arxiv.org/abs/1112.5314

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