Bandwidth Efficient OFDM Transmitter Diversity Techniques

EURASIP Journal on Advances in Signal Processing

关键词: space-time coding;    space-frequency coding;    transmitter diversity;    OFDM;    channel estimation;    pilot symbols;   

DOI  :  

来源: DOAJ

【 摘 要 】

Space-time block-coded orthogonal frequency division multiplexing (OFDM) transmitter diversity techniques have been shown to be efficient means of achieving near-optimal diversity gain in frequency-selective fading channels. However, these known techniques all require a cyclic prefix to be added to the transmitted symbols, resulting in bandwidth expansion. In this paper, iterative space-time and space-frequency block-coded OFDM transmitter diversity techniques are proposed that exploit spatial diversity to improve spectral efficiency by eliminating the need for a cyclic prefix.

【 授权许可】

Unknown