A Novel Closed-Loop Quasi-Orthogonal Space- Time Block Coding Scheme for Long-Code WCDMA
نویسندگان
چکیده
Quasi-orthogonal space-time block codes (QO-STBCs) are proposed for long-code WCDMA systems which exploit the subspace structure of the long-code WCDMA transmission. QOSTBCs achieve full code rate at the expense of loss in diversity gain. In this paper, we propose a feedback method for QO-STBCS in WCDMA to achieve full diversity and full code rate. The bit error rate (BER) performance for the proposed algorithm is compared with other conventional methods for typical quasi-static channels. Simulation results show that the proposed feedback method yields a significant improvement in BER performance over openloop schemes.
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