differential transmit for MIMO-OFDM

Richards

【文件名】:06630@52RD_heme for frequency selective MIMO-OFDM systems.rar
【格　式】:rar
【大　小】:491K
【简　介】:Abstract—In this paper, we propose a differential encoding and
decoding scheme for MIMO-OFDM systems under frequencyselective
fading channels. We differentially encode signal within
each OFDM symbol period. The scheme does not only reduce
encoding and decoding delay, but also relaxes the restriction on
channel assumption. The successful differential decoding of the
proposed scheme depends on the assumption that fading channels
keep constant over two OFDM symbol periods rather than
multiple of them as required in previous schemes. We provide
the pairwise error probability formulation, and quantify the
performance criteria in terms of diversity and coding advantages.
Our design criteria reveals that the existing diagonal cyclic codes
can be applied to achieve full diversity with high coding gain.
Performance simulations in various channel conditions show
that our proposed scheme yields superior performance to the
previously proposed differential schemes.


【目　录】:
I. INTRODUCTION
II. SYSTEM DESCRIPTION
III. SINGLE-BLOCK DIFFERENTIAL TRANSMIT SCHEME
IV. PAIRWISE ERROR PROBABILITY AND DESIGN
V. SIMULATION RESULTS
VI. CONCLUSIONS