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A Framework for One-Bit and Constant-Envelope Precoding over Multiuser Massive MISO Channels by Shao, Mingjie; Li, Qiang; Ma, Wing-Kin; So, Anthony Man-Cho is a scholarly article available to read on EtoBox.

What is A Framework for One-Bit and Constant-Envelope Precoding over Multiuser Massive MISO Channels about?

Consider the following problem: A multi-antenna base station (BS) sends multiple symbol streams to multiple single-antenna users via precoding. However, unlike conventional multiuser precoding, the transmitted signals are subjected to binary, unit-modulus, or even discrete unit-modulus constraints. Such constraints arise in the one-bit and constant-envelope (CE) massive MIMO scenarios, wherein high-resolution digital-to-analog converters (DACs) are replaced by one-bit DACs and phase shifters, respectively, for cutting down hardware cost and energy consumption. Multiuser precoding under one-bit and CE restrictions poses significant design difficulty. In this paper we establish a framework for designing multiuser precoding under the one-bit, continuous CE and discrete CE scenarios---all within one theme. We first formulate a precoding design that focuses on minimizations of symbol-error probabilities (SEPs), assuming quadrature amplitude modulation (QAM) constellations. We then devise an algorithm for our SEP-based design. The algorithm combines i) a novel penalty method for handling binary, unit-modulus and discrete unit-modulus constraints; and ii) a first-order non-convex optimiza

Author

Shao, Mingjie; Li, Qiang; Ma, Wing-Kin; So, Anthony Man-Cho

Published

2018

Language

EN