Title :
An improved V-BLAST receiver based on reliability normalization
Author :
Kim, Hyounkuk ; Park, Hyuncheol
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon, South Korea
Abstract :
We present an improved V-BLAST receiver that cancels co-channel interference (CCI), based on reliability normalization over frequency-selective channels, in the log-likelihood ratio (LLR) sense. The performance has been evaluated in the exponential decay channel model with various normalized rms delay spreads and different filter taps. It is also compared with the ordered successive interference cancellation-decision feedback equalizer (OSIC-DFE). Simulation results show that the proposed receiver outperforms the OSIC-DFE, especially when the filter taps are short.
Keywords :
MIMO systems; cochannel interference; covariance matrices; decision feedback equalisers; diversity reception; fading channels; interference suppression; radio receivers; space division multiplexing; space-time adaptive processing; CCI; MIMO-DFE; OSIC-DFE; V-BLAST receiver; auto-covariance matrix; co-channel interference cancellation; delay spread; exponential decay channel model; fading channels; feedback filters; feedforward filters; filter taps; frequency-selective channels; log-likelihood ratio; ordered successive interference cancellation-decision feedback equalizer; receive diversity gain; reliability normalization; spatial multiplexing gain; Decision feedback equalizers; Diversity methods; Finite impulse response filter; Frequency; Interchannel interference; Interference cancellation; Radiofrequency interference; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400297
