Efficient Successive Interference Cancellation Algorithms for the DSTTD System

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 5Language: englishTyp: PDF

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Kim, Hyounkuk; Park, Hyuncheol (School of Engineering, Information and Communications University (ICU), 119 Munjiro, Yuseong-gu, Daejeon, 305-714, Korea)

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(exp ?4).