Title :
Optimal Power Allocation for Space Shift Keying Modulation in a Distributed Antenna System
Author :
Enzhi Zhou ; Li Hao
Author_Institution :
Key Lab. of Inf. Coding & Transm., Southwest Jiaotong Univ., Chengdu, China
Abstract :
In a distributed antenna system (DAS), remote antenna units (RAU) cooperate to form a distributed SSK transmitter (DAS-SSK), where each RAU is equipped with multiple antennas but a single radio-frequency (RF) chain. The fading channel of each RAU distributes with a different variance due to the different propagation distance and shadowing fading. In this letter, a tight upper bound on the symbol error rate (SER) of the DAS-SSK system is derived based on the union bound analysis. A convex-optimization-based optimal power allocation scheme among RAUs is proposed, which shows a significant performance improvement.
Keywords :
antenna arrays; convex programming; error statistics; fading channels; modulation; resource allocation; DAS-SSK; SER; convex optimization; distributed SSK transmitter; distributed antenna system; fading channel; optimal power allocation; propagation distance; remote antenna units; shadowing fading; space shift keying modulation; symbol error rate; union bound analysis; Decision support systems; Fading; Modulation; Resource management; Signal to noise ratio; Transmitting antennas; Space shift keying modulation; convex optimization; distributed antenna system; power allocation;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.080213.130805
