Improved Space-time Turbo Codes with Full Spatial Diversity over Integer Ring
نویسنده
چکیده
In this paper, we propose the space-time turbo codes designed over integer ring for BPSK and QPSK modulation. The proposed spacetime turbo codes addeve the full spatial diversity and can be decoded using the iterative binary soft-input sofl-output (SISO) algorithm. The BPSK/QPSK binary rank criterion is used to find the interleavers which guarantee the full spatial diversity. It is shown that the proposed codes have a signal-to-noise ratio (SNR) gain of 0.5 dB at FER of IO-$ over the space-time turbo codes with the iterative non-binary m a x i " D posteriori probability (MAP) decoding, proposed hy Su and Geraniotis [I], both in a quasi-static fading and in an independent Rayleigh f a d w
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