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Tight BER bounds for iteratively decoded bit-interleaved space-time coded modulation

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2 Author(s)
Yuheng Huang ; Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA ; J. A. Ritcey

Iteratively decoded bit-interleaved space-time coded modulation (BI-STCM) greatly lowers bit error rate (BER) over fast Rayleigh fading multiple-input multiple-output (MIMO) channels. We develop a general, tight and efficient theoretical error-free feedback bound (EF bound) to analyze the asymptotic BER. The convergence to the EF bound and the accuracy of the prediction are verified by simulation. With the best rate 1/2 4-state convolutional code and the 16-QAM modified set partitioning labeling, the BER of 10-6 can be achieved at Eb/N0=1.6 dB with 2 transmit and 2 receive antennas.

Published in:

IEEE Communications Letters  (Volume:8 ,  Issue: 3 )