Parallel and successive interference cancellation for MC-CDMA and their near-far resistance

Author

Benvenuto, Nevio ; Bisaglia, Paola

Author_Institution

Dipt. di Ingegneria dell´´Informazione, Padova Univ., Italy

Volume

2

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

1045

Abstract

Recently, multi-carrier code division multiple access (MC-CDMA) systems have been considered as potential candidates for next generation (4G) technology. Within this context, due to their good compromise between complexity and performance, multi-user interference cancellation (IC) techniques have been proposed as an effective solution in the receiver design, both for downlink and uplink transmissions; nevertheless actual results are far from being exhaustive. In this paper, a performance comparison of parallel (PIC) and successive (SIC) IC techniques is presented, investigating also the influence of user power levels in a near-far environment, under dispersive channel conditions. The impact of the choice of the single-user detection (SUD) technique used in PIC and SIC receivers is also considered. Moreover, results are presented for convolutionally-coded systems, decoded by both hard and soft-input decoding methods.

Keywords

4G mobile communication; OFDM modulation; code division multiple access; convolutional codes; dispersive channels; interference suppression; 4G technology; MC-CDMA; OFDM; PIC; SIC; SUD; convolutionally-coded systems; dispersive channel conditions; downlink transmissions; hard-input decoding; multi-carrier code division multiple access; multi-user interference cancellation; near-far environment; parallel interference cancellation; single-user detection technique; soft-input decoding; successive interference cancellation; uplink transmissions; user power levels; Convolution; Convolutional codes; Decoding; Downlink; Interference cancellation; Multiaccess communication; Multicarrier code division multiple access; OFDM; Silicon carbide; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285180

Filename

1285180