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International Journal of Digital Multimedia Broadcasting
Volume 2010, Article ID 684967, 5 pages
Research Article

Phase-Shift Cyclic-Delay Diversity for MIMO OFDM Systems

Wireless Solutions Lab, Samsung Telecommunications America, Richardson, TX 75082, USA

Received 1 September 2009; Accepted 29 November 2009

Academic Editor: Hongxiang Li

Copyright © 2010 Young-Han Nam et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Phase-shift cyclic-delay diversity (PS CDD) scheme and space-frequency-block-code (SFBC) PS CDD are developed for multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The proposed PS CDD scheme preserves the diversity advantage of traditional CDD in uncorrelated multiantenna channels, and furthermore removes frequency-selective nulling problem of the traditional CDD in correlated multiantenna channels.