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Maximum likelihood detection for differential unitary space-time modulation with carrier frequency offset

Gao, Feifei and Cui, Tao and Nallanathan, Arumugam and Tellambura, Chinthananda (2008) Maximum likelihood detection for differential unitary space-time modulation with carrier frequency offset. IEEE Transactions on Communications, 56 (11). pp. 1881-1891. ISSN 0090-6778. doi:10.1109/TCOMM.2008.060672.

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Can conventional differential unitary space time modulation (DUSTM) be applied when there is an unknown carrier frequency offset (CFO)? This paper answers this question affirmatively and derives the necessary maximum likelihood (ML) detection rule. The asymptotic performance of the proposed ML rule is analyzed, leading to a code design criterion for DUSTM by using the modified diversity product. The resulting proposed decision rule is a new differential modulation scheme in both the temporal and spatial domains. Two sub-optimal multiple-symbol decision rules with improved performance are also proposed. For the efficient implementation of these, we derive a modified bound intersection detector (BID), a generalization of the previously derived optimal BID for the conventional DUSTM. The simulation results show that the proposed differential modulation scheme is more robust against CFO drifting than the existing double temporal differential modulation.

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Additional Information:© Copyright 2008 IEEE. Reprinted with permission. Paper approved by H. Jafarkhani, the Editor for Wireless Communications of the IEEE Communications Society. Manuscript received December 7, 2006; revised May 14, 2007 and August 23, 2007. This work was supported in part by the National University of Singapore under Grant R-263-000-421-112. This paper was presented in part at the IEEE Global Telecommunications Conference, Washington, DC, USA, November 2007. We would like to express our thanks to Dr. Rong Li from National University of Singapore for suggesting reference [23]. We also thank the editor H. Jafarkhani and anonymous reviewers for their helpful comments to improve the quality of this work.
Funding AgencyGrant Number
National University of SingaporeR-263-000-421-112
Subject Keywords:Carrier frequency offset; differential unitary space time code; maximum likelihood; MIMO; bound intersection; wireless communications
Issue or Number:11
Record Number:CaltechAUTHORS:GAOieeetc08c
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12550
Deposited By: Archive Administrator
Deposited On:12 Dec 2008 21:08
Last Modified:08 Nov 2021 22:29

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