Maximum projection based interference alignment in MIMO interference systems

Author

Yanan Ma ; Yiqing Zhou ; Garcia, Virgile ; Hongchao Chen ; Jinglin Shi

Author_Institution

Inst. of Comput. Technol., Beijing, China

fYear

2014

fDate

13-15 Oct. 2014

Firstpage

21

Lastpage

25

Abstract

Interference alignment (IA) consolidates interference signals into a small subspace and makes the interference-free detection possible for useful signals. Most existing IA precoders such as CJ-IA are designed to maximize the degree of freedom (DoF), which does not necessarily result in optimized system performance such as receiving signal-to-noise ratio (SNR). In this paper, based on CJ-IA, a maximum projection based IA (MP-IA) precoding scheme is proposed to maximize the desired signal strength at receivers, which brings optimized SNR, sum-rate and bit error rate (BER) performance. It is shown in simulations that the proposed MP-IA outperforms existing schemes in terms of desired signal strength, sum-rate and BER.

Keywords

MIMO communication; error statistics; precoding; radio receivers; radiofrequency interference; CJ-IA precoders; MIMO interference systems; MP-IA precoding scheme; bit error rate; interference alignment; interference signals; interference-free detection; maximum projection; radio receivers; signal strength; small subspace; Bit error rate; Interference; MIMO; Receivers; Signal to noise ratio; Transmitters; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications in China (ICCC), 2014 IEEE/CIC International Conference on

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICCChina.2014.7008236

Filename

7008236