Improper Gaussian signaling on the two-user SISO interference channel

Author

Ho, Zuleita K M ; Jorswieck, Eduard

Author_Institution

Tech. Univ. Dresden, Dresden, Germany

fYear

2011

fDate

6-9 Nov. 2011

Firstpage

824

Lastpage

828

Abstract

On a single-input-single-out (SISO) interference channel (IC), under non-cooperative setting, every user maximizes its own transmit date rate by transmitting proper (symmetric) complex Gaussian symbols with full power. However, the efficiency of such equilibrium is low. In particular, the resulting interference saturates the sum rate in high SNR regime, yielding degrees-of-freedom zero. Fortunately, through cooperation among transmitters, it is possible to restore the degrees-of-freedom by the user of improper complex Gaussian signaling. In this paper, we study the impact of improper signaling on the 2-user SISO-IC. In particular, we analyze the efficiency of improper signaling in extreme SNR regimes and the performance of some particular simple improper transmit strategies.

Keywords

Gaussian processes; MIMO communication; interference suppression; radiofrequency interference; telecommunication signalling; wireless channels; SNR; complex Gaussian symbol; degrees-of-freedom zero; improper complex Gaussian signaling; two-user SISO IC; two-user single-input-single-out interference channel; Covariance matrix; Integrated circuits; Interference channels; Receivers; Signal to noise ratio; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication Systems (ISWCS), 2011 8th International Symposium on

Conference_Location

Aachen

ISSN

2154-0217

Print_ISBN

978-1-61284-403-9

Electronic_ISBN

2154-0217

Type

conf

DOI

10.1109/ISWCS.2011.6125277

Filename

6125277