다중사용자 공간변조시스템에서 압축센싱기반 신호복원 기법

Abstract

In this paper, we propose a compressed sensing-based signal recovery technique for an uplink multi-user spatial modulation (MU-SM) system. In the MU-SM system, only one antenna among   antennas of each user becomes active by nature. Thus, this characteristics is exploited for signal recovery at a base station. We modify the conventional orthogonal matching pursuit (OMP) algorithm which has been widely used for sparse signal recovery in literature for the MU-SM system, which is called MU-OMP. We also propose a parallel OMP algorithm for the MU-SM system, which is called MU-POMP. Specifically, in the proposed algorithms, antenna indices of a specific user who was selected in the previous iteration are excluded in the next iteration of the OMP algorithm. Simulation results show that the proposed algorithms outperform the conventional OMP algorithm in the MU-SM system. 논문 14-39A-07-09 The Journal of Korea Information and Communications Society '14-07 Vol.39A No.07 http://dx.doi.org/10.7840/kics.2014.39A.7.424 424 ※ 본 연구는 2013년도 정부(교육부)의 재원으로 한국연구재단의 기초연구사업지원을 받아 수행된 것임(2013R1A1A2A10004905) First Author:Department of Information and Communication Engineering, Gyeongsang National University, jhpark.win@gnu.ac.kr, 학생회원 ° Corresponding Author : Department of Information and Communication Engineering & Institute of Marine Industry, Gyeongsang National University, bcjung@gnu.ac.kr, 종신회원 * Department of Information and Communication Engineering & Institute of Marine Industry, Gyeongsang National University, twban35@gnu.ac.kr, 종신회원 논문번호:KICS2014-05-211, Received May 31, 2014; Revised July 9, 2014; Accepted July 9, 2014 논문 /다중사용자 공간변조시스템에서 압축센싱기반 신호복원 기법