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Distributed space-time codes: relays delays and code word overlays

Published: 12 August 2007 Publication History

Abstract

We consider decode and forward strategy in the relay channel, where in the first time interval the source communicates its message to its neighboring relays, and in the second time interval, the relays form a distributed space-time code and forward the source message to the destination. In particular, we tackle the problem of overlapping code words in asynchronous distributed coded transmission. We show that the class of delay-tolerant TAST codes [1], with a small modification, can achieve full spatial diversity even when considering overlapping code words from the different asynchronous relays. Simulation results confirm our analysis.

References

[1]
M.O. Damen and A.R. Hammons, Jr., "On Distributed Space-Time Coding," in Proc. of IEEE WCNC, Hong Kong, March 11--15, 2007.
[2]
Y. Li and X.-G. Xia, "Full Diversity Distributed Space-Time Trellis Codes for Asynchronous Cooperative Communications," preprint, 2004.
[3]
H.F. Lu and P.V. Kumar, "A Unified Construction of Space-Time Codes with Optimal Rate-Diversity Tradeoff," IEEE Transactions on Information Theory.
[4]
Y. Shang and X.-G. Xia, "Shift Full Rank Matrices and Applications in Space-Time Trellis Codes for Relay Networks with Asynchronous Cooperative Diversity," preprint.
[5]
H. El Gamal and M.O. Damen, "Universal space-time coding," IEEE Trans. Inform. Theory, vol. 49, pp. 1097-1119, May 2003.
[6]
A.R. Hammons Jr. and Ross E. Conklin Jr., "Space-Time Block Codes for Quasi-synchronous Cooperative Diversity," Military Communications Conference (MILCOM), Oct. 23--25, 2006, Washington, DC.
[7]
M.O. Damen, H. El Gamal, and N. C. Beaulieu, "Systematic construction of algebraic full diversity constellations," IEEE Trans. Inform. Theory, vol. 49, pp. 3344--3349, Dec. 2003.

Cited By

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  • (2010)Multi-hop MIMO relay networksIEEE Transactions on Wireless Communications10.1109/TWC.2010.05.0909159:5(1738-1747)Online publication date: 1-May-2010
  • (2009)End-to-end joint antenna selection strategy and distributed compress and forward strategy for relay channelsEURASIP Journal on Wireless Communications and Networking10.1155/2009/2954182009(1-12)Online publication date: 1-Feb-2009
  • (2009)To code in space and time or not in multihop relay channelsIEEE Transactions on Signal Processing10.1109/TSP.2009.201700257:7(2736-2747)Online publication date: 1-Jul-2009
  • Show More Cited By

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  1. Distributed space-time codes: relays delays and code word overlays

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      cover image ACM Conferences
      IWCMC '07: Proceedings of the 2007 international conference on Wireless communications and mobile computing
      August 2007
      716 pages
      ISBN:9781595936950
      DOI:10.1145/1280940
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 12 August 2007

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      Author Tags

      1. asynchronous commnunication
      2. cooperative diversity
      3. space-time codes

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      View all
      • (2010)Multi-hop MIMO relay networksIEEE Transactions on Wireless Communications10.1109/TWC.2010.05.0909159:5(1738-1747)Online publication date: 1-May-2010
      • (2009)End-to-end joint antenna selection strategy and distributed compress and forward strategy for relay channelsEURASIP Journal on Wireless Communications and Networking10.1155/2009/2954182009(1-12)Online publication date: 1-Feb-2009
      • (2009)To code in space and time or not in multihop relay channelsIEEE Transactions on Signal Processing10.1109/TSP.2009.201700257:7(2736-2747)Online publication date: 1-Jul-2009
      • (2008)Diversity-Multiplexing Tradeoffs in MIMO Relay ChannelsIEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference10.1109/GLOCOM.2008.ECP.194(1-6)Online publication date: Nov-2008

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