Title :
Improper Gaussian signaling on the two-user SISO interference channel
Author :
Ho, Zuleita K M ; Jorswieck, Eduard
Author_Institution :
Tech. Univ. Dresden, Dresden, Germany
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;
Conference_Titel :
Wireless Communication Systems (ISWCS), 2011 8th International Symposium on
Conference_Location :
Aachen
Print_ISBN :
978-1-61284-403-9
Electronic_ISBN :
2154-0217
DOI :
10.1109/ISWCS.2011.6125277
