TY - GEN
T1 - A hybrid serial-parallel interference cancellation scheme for WCDMA systems
AU - Haghighat, Pooyan
AU - Ghrayeb, Ali
PY - 2007
Y1 - 2007
N2 - This paper proposes a hybrid interference cancellation scheme for wideband code division multiple access (WCDMA) uplink transmission. Principles of serial (SIC) and parallel (PIC) interference cancellation are combined with a novel user configuration algorithm (termed "trickle") in order to provide improved bit-error-rate (BER) performance while maintaining overall processing delay as compared to previous hybrid schemes. The proposed scheme utilizes an adaptive matrix to compute the required number of interference cancellation iterations for each user prior to the detection process. The total number of iterations is determined based on the number of users and is set to match that of previously designed interference cancellation models. Bit-streaming, pipelined multiuser detection is employed and channel estimates are obtained using sample pilot data known at the receiver. The trickle algorithm is applied to conventional SIC as well as previous hybrid models. Results show an improvement of 1 dB over group-wise SIC and similar performance to hybrid IC with reduced processing delay at the cost of complexity.
AB - This paper proposes a hybrid interference cancellation scheme for wideband code division multiple access (WCDMA) uplink transmission. Principles of serial (SIC) and parallel (PIC) interference cancellation are combined with a novel user configuration algorithm (termed "trickle") in order to provide improved bit-error-rate (BER) performance while maintaining overall processing delay as compared to previous hybrid schemes. The proposed scheme utilizes an adaptive matrix to compute the required number of interference cancellation iterations for each user prior to the detection process. The total number of iterations is determined based on the number of users and is set to match that of previously designed interference cancellation models. Bit-streaming, pipelined multiuser detection is employed and channel estimates are obtained using sample pilot data known at the receiver. The trickle algorithm is applied to conventional SIC as well as previous hybrid models. Results show an improvement of 1 dB over group-wise SIC and similar performance to hybrid IC with reduced processing delay at the cost of complexity.
UR - http://www.scopus.com/inward/record.url?scp=48749127754&partnerID=8YFLogxK
U2 - 10.1109/CCECE.2007.160
DO - 10.1109/CCECE.2007.160
M3 - Conference contribution
AN - SCOPUS:48749127754
SN - 1424410215
SN - 9781424410217
T3 - Canadian Conference on Electrical and Computer Engineering
SP - 621
EP - 624
BT - 2007 Canadian Conference on Electrical and Computer Engineering, CCECD
T2 - 2007 Canadian Conference on Electrical and Computer Engineering, CCECD
Y2 - 22 April 2007 through 26 April 2007
ER -