SAIC receiver algorithms for VAMOS downlink transmission

Author

Vutukuri, Mahesh Gupta ; Malladi, Rakesh ; Kuchi, Kiran ; Koilpillai, R. David

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai, India

fYear

2011

fDate

6-9 Nov. 2011

Firstpage

31

Lastpage

35

Abstract

Voice services over Adaptive Multiuser channel in One Slot (VAMOS) performance in the presence of GMSK interferer is presented. Widely-Linear (WL) MMSE filtering is used to cancel the co-channel GMSK interferer while performing α-QPSK detection. In this paper, two ways of estimating the Sub Channel Power Imbalance Ratio (SCPIR) are discussed. Due to the colouration of the resultant impairment after filtering, WL metric is proposed which incorporates error covariance between I/Q components in the metric computation. WL RSSE is used as the equalizer. Simulation results using the proposed receiver architecture show significant performance important over conventional VAMOS receivers.

Keywords

cochannel interference; interference suppression; least mean squares methods; multiuser channels; quadrature phase shift keying; radio receivers; voice communication; α-QPSK detection; MMSE filtering; SAIC receiver; SCPIR; VAMOS downlink transmission; cochannel GMSK interferer; error covariance; single antenna interference cancellation; sub channel power imbalance ratio; voice services over adaptive multiuser channel in one slot; Bit error rate; GSM; Interference; Maximum likelihood estimation; Measurement; Receivers;

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.2011.6125304

Filename

6125304