Load modulated arrays using channel modulation with RF mirrors

Bhat, S and Chockalingam, A (2019) Load modulated arrays using channel modulation with RF mirrors. In: 89th IEEE Vehicular Technology Conference, VTC Spring 2019, 28 April - 1 May 2019, Kuala Lumpur.

PDF VTC Spring_2019.pdf - Published Version Restricted to Registered users only Download (13MB) | Request a copy

Abstract

Multiantenna transmission using load modulated arrays (LMAs) is gaining recent research interest. LMAs use a single central power amplifier and tune the antenna loads according to the information signal. In this paper, we propose a novel multiantenna transmitter architecture that can enable high-rate transmissions using LMAs. The proposed architecture uses channel modulation with RF mirrors in conjunction with antenna load modulation to transmit information bits. The proposed architecture has two key advantages: 1) it facilitates simple construction of high-rate signal sets suited for LMAs, and 2) it requires significantly fewer channel coefficients to be estimated at the receiver compared to conventional channel modulation architectures. The proposed architecture is shown to achieve improved bit error performance compared to conventional load modulation as well as spatial modulation, which are also single power amplifier transmission schemes. We also investigate the use of the proposed transmission scheme in a multiuser setting on the uplink. The proposed scheme not only offers the advantage of RF hardware simplicity at the user equipment but also requires fewer receive antennas at the base station to achieve a target bit error performance. © 2019 IEEE.

Item Type:	Conference Paper
Publication:	IEEE Vehicular Technology Conference
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Architecture; Hole mobility; Mirrors; Mobile telecommunication systems; Power amplifiers; Receiving antennas; Signal receivers; Transmissions, Channel modulation; High-rate transmission; Hypersphere; Multi-antenna transmission; Multi-antenna transmitters; Proposed architectures; Signal set; Transmission schemes, Modulation
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	13 Dec 2022 05:20
Last Modified:	13 Dec 2022 05:20
URI:	https://eprints.iisc.ac.in/id/eprint/78341

Actions (login required)

View Item