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2010

Spectral efficient transmit diversity techniques without cyclic prefix for fading relay channels

8 years 2 months ago
Spectral efficient transmit diversity techniques without cyclic prefix for fading relay channels
Abstract--This paper proposes spectral efficient relayassisted transmit diversity techniques, i.e., space-time and space-frequency block codes (STBC/SFBC), for single carrier frequency-domain equalization (SC-FDE). The proposed systems achieve spatial diversity over frequency selective channels in a distributed fashion without cyclic prefix (CP), which increases spectral efficiency of conventional relay-assisted systems. In practical mobile applications, the CP-less distributed STBC (D-STBC) SC-FDE suffers from the time selectivity of wireless fading channels, resulting in a deviation from the basic assumption of Alamouti codeword. In order to obtain a reliable performance over doubly selective channels, the CP-less D-SFBC SC-FDE and its efficient implementation are presented. Further, the performance of these two distributed SC transmissions is analytically compared over fast fading (i.e., time selective) environments. For evaluation of mean square error over fast fading channels, we ...
Ui-Kun Kwon, Dae-Young Seol, Gi-Hong Im
Added 21 May 2011
Updated 21 May 2011
Type Journal
Year 2010
Where TCOM
Authors Ui-Kun Kwon, Dae-Young Seol, Gi-Hong Im
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