| Paper: | SPCOM-P12.9 | ||
| Session: | MIMO: Precoding / Beamforming | ||
| Time: | Friday, May 19, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communication: MIMO space-time code design, analysis and decoding algorithms | ||
| Title: | PERFORMANCE ANALYSIS OF A DSTTD SYSTEM WITH DECISION-FEEDBACK DETECTION | ||
| Authors: | Hyounkuk Kim, Hyuncheol Park, Information and Communications Univeristy, Republic of Korea; Taejoon Kim, Iksoo Eo, Electronics and Telecommunication Research Institute (ETRI), Republic of Korea | ||
| Abstract: | We investigate closed-form bit error rate (BER) expressions for the double space-time transmit diversity (DSTTD) system with a zero-forcing decision-feedback (ZF-DF) detector. We show that the lower Alamouti's STTD unit can obtain the second order diversity gain. However, the upper one cannot guarantee the fourth order diversity due to the effect of error propagation. For example, it simply gives 3.5 dB signal-to-noise ratio (SNR) advantage over the lower one at the bit error rate (BER) of $10^{-3}$. Under the same environment, overall BER performance also suffers from 5.6 dB performance degradation over a maximum likelihood (ML) detector. | ||
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