Revisiting the Capacity of Noncoherent Fading Channels in mmWave System

Guido Carlo Ferrante, Tony Q.S. Quek, Moe Z. Win

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Millimeter wave (mmWave) communications use large transmission bandwidth and experience severe propagation conditions. This forces the communication system to operate in the so-called wideband regime, where signals must be increasingly 'peaky' in order to attain a large fraction of the peak unconstrained wideband capacity. This paper investigates the capacity of the noncoherent channels as a function of bandwidth for signals with average and peak power constraints operating in the millimeter spectrum. Upper and lower bounds on capacity are provided, and the impact of features peculiar to mmWave channels is investigated. Numerical results for a scenario based on recent experimental campaigns are provided. It is shown that the rate achievable by a typical user in a mmWave cell with 'non-peaky' signaling can be bounded away from the peak unconstrained wideband capacity. This suggests to reconsider the role of signaling 'peakedness' in future mmWave communications.

Original languageEnglish
Article number7896562
Pages (from-to)3259-3275
Number of pages17
JournalIEEE Transactions on Communications
Volume65
Issue number8
DOIs
Publication statusPublished - 2017 Aug

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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