Sign Reversal Channel Switching Method in Space-Time Block Code for OFDM Systems

Hyeok Koo JUNG

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E103-A    No.2    pp.567-570
Publication Date: 2020/02/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.2019EAL2090
Type of Manuscript: LETTER
Category: Communication Theory and Signals
channel switching,  maximal ratio combining,  orthogonal frequency division multiplexing,  sign reversal,  space-time block code,  

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This paper proposes a simple source data exchange method for channel switching in space-time block code. If one transmits source data on another antenna, then the receiver should change combining method in order to adapt it. No one except knowing the channel switching sequence can decode the received data correctly. In case of exchanging data for channel switching, four orthogonal frequency division multiplexing symbols are exchanged according to a format of space-time block code. In this paper, I proposes two simple sign exchanges without exchanging four orthogonal-frequency division multiplexing symbols which occurs a different combining and channel switching method in the receiver.