Title :
Efficient Successive Interference Cancellation Algorithms for the DSTTD System
Author :
Kim, Hyounkuk ; Park, Hyuncheol
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon
Abstract :
We present two ordered successive interference cancellation (OSIC) schemes using the QR decomposition for the double space-time transmit diversity (DSTTD) system. These are designed by zero-forcing (ZF) and minimum-mean-squared error (MMSE) criteria. The computational complexity is significantly reduced by utilizing special structure of the channel matrix. These schemes require fewer computations than previously known OSIC schemes. Especially the ZF-OSIC-QR achieves approximately 8% lower computational efforts than the two-stage linear ZF detection with 2.4 dB performance advantage at the bit error rate (BER) of 10-4
Keywords :
computational complexity; diversity reception; error statistics; interference suppression; least mean squares methods; matrix algebra; radiofrequency interference; wireless channels; BER; MMSE; bit error rate; channel matrix; computational complexity; double space-time transmit diversity; minimum-mean-squared error; ordered successive interference cancellation; zero-forcing criteria; AWGN; Bit error rate; Channel capacity; Computational complexity; Diversity methods; Frequency; Interference cancellation; Matrix decomposition; Receiving antennas; Transmitting antennas;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651399
