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An Iterative Cyclic Prefix Reconstruction Technique for Multi-Antenna Single-Carrier Transmission Systems over Multipath Wireless Channels
Min-Sung KIM Jong-Bu LIM Gi-Hong IM
Publication
IEICE TRANSACTIONS on Communications
Vol.E90-B
No.11
pp.3208-3215 Publication Date: 2007/11/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.11.3208 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: MIMO, STBC, SFBC, SC-FDE, ICI, CP reconstruction, turbo equalization,
Full Text: PDF(344.7KB)>>
Summary:
In this paper, an efficient cyclic prefix reconstruction (CPR) technique with turbo equalization is developed for multi-antenna single-carrier frequency-domain equalization (SC-FDE) systems, which are for multi-input multi-output (MIMO), space-time block code (STBC), and space-frequency block code (SFBC) applications. The proposed method includes pre-processing estimation (PPE), weighted interblock interference cancellation (WIBIC), or residual intercarrier interference suppression (RICIS). PPE is employed to compute initial values of MIMO turbo equalization and the WIBIC is developed to cancel interblock interference (IBI) at the initial iteration of the CPR for STBC SC-FDE. RICIS is used to mitigate residual intercarrier interference (ICI) after each iteration of the CPR. By applying the proposed method to the multi-antenna SC-FDE system with insufficient cyclic prefix (CP), we can significantly improve its error performance, obtaining the benefits of spectral efficiency gain and multiplexing/diversity gain in MIMO/STBC/SFBC.
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