Open Access

Spatial Multiplexing Gains for Realistic Sized Ad Hoc Networks with Directional Antenna Arrays

EURASIP Journal on Wireless Communications and Networking20072007:098490

DOI: 10.1155/2007/98490

Received: 7 January 2007

Accepted: 16 August 2007

Published: 22 October 2007

Abstract

We concentrate on an ad hoc network model with nodes on integer lattice points over a 2D plane. We examine the limits of ad hoc network performance for systems with antenna arrays capable of allowing both spatial multiplexing and directional processing. Two cases are considered. In the first case, we consider "perfect" directional antenna arrays, in other words, each node can form beams of infinitesimally narrow beamwidth. In this case, the throughput capacity of an ad hoc network is independent of the network size. In the second case, we consider a more practical system where each node can form a fixed number of beams of finite beamwidth. Our results show that the spatial multiplexing gains depend on the system size, antenna beamwidth, and number of antenna beams. Furthermore, we show that spatial multiplexing gains offsetting the interference-related performance degradation can be achieved in ad hoc networks with thousands of nodes.

[1234567891011121314151617181920]

Authors’ Affiliations

(1)
Department of Industrial and, Systems Engineering of Lehigh University
(2)
Department of Electrical and, Computer Engineering of Lehigh University

References

  1. Telatar IE: Capacity of multi-antenna Gaussian channels. European Transactions on Telecommunications 1999,10(6):585-595. 10.1002/ett.4460100604View ArticleGoogle Scholar
  2. Foschini GJ, Gans MJ: On limits of wireless communications in a fading environment when using multiple antennas. Wireless Personal Communications 1998,6(3):311-335. 10.1023/A:1008889222784View ArticleGoogle Scholar
  3. Larsson EG: Improving the frame-error-rate of spatial multiplexing in block fading by randomly rotating the signal constellation. IEEE Communications Letters 2004,8(8):514-516. 10.1109/LCOMM.2004.833805MathSciNetView ArticleGoogle Scholar
  4. Spencer QH, Swindlehurst AL, Haardt M: Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels. IEEE Transactions on Signal Processing 2004,52(2):461-471. 10.1109/TSP.2003.821107MathSciNetView ArticleGoogle Scholar
  5. Zhang Y, Wang G, Amin MG: Cooperative spatial multiplexing in multi-hop wireless networks. Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '06), May 2006, Toulouse, France 4: 821-824.Google Scholar
  6. Bölcskei H, Gesbert D, Paulraj AJ: On the capacity of OFDM-based spatial multiplexing systems. IEEE Transactions on Communications 2002,50(2):225-234.View ArticleGoogle Scholar
  7. Kim SW: Cooperative relaying architecture for wireless video sensor networks. The International Conference on Wireless Networks, Communications and Mobile Computing, June 2005, Maui, Hawaii, USA 2: 993-998.Google Scholar
  8. Gore DA, Heath RW Jr., Paulraj AJ: Transmit selection in spatial multiplexing systems. IEEE Communications Letters 2002,6(11):491-493. 10.1109/LCOMM.2002.805517View ArticleGoogle Scholar
  9. Heath RW Jr., Sandhu S, Paulraj A: Antenna selection for spatial multiplexing systems with linear receivers. IEEE Communications Letters 2001,5(4):142-144. 10.1109/4234.917094View ArticleGoogle Scholar
  10. Heath RW Jr., Love DJ: Multimode antenna selection for spatial multiplexing systems with linear receivers. IEEE Transactions on Signal Processing 2005,53(8):3042-3056.MathSciNetView ArticleGoogle Scholar
  11. Nasipuri A, Ye S, You J, Hiromoto RE: A MAC protocol for mobile ad hoc networks using directional antennas. Proceedings of the IEEE Wireless Communications and Networking Conference (WCNC '00), September 2000, Chicago, Ill, USA 3: 1214-1219.View ArticleGoogle Scholar
  12. Nasipuri A, Mandava J, Manchala H, Hiromoto RE: On-demand routing using directional antennas in mobile ad hocnetworks. Proceedings of the 9th International Conference on Computer Communications and Networks, October 2000, Las Vegas, Nev, USA 535-541.Google Scholar
  13. Ko Y-B, Shankarkumar V, Vaidya NH: Medium access control protocols using directional antennas in ad hoc networks. Proceedings of the 19th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM '00), March 2000, Tel Aviv, Israel 1: 13-21.Google Scholar
  14. Choudhury RR, Yang X, Ramanathan R, Vaidya NH: On designing MAC protocols for wireless networks using directional antennas. IEEE Transactions on Mobile Computing 2006,5(5):477-491.View ArticleGoogle Scholar
  15. Zorzi M, Zeidler J, Anderson A, et al.: Cross-layer issues in MAC protocol design for MIMO ad hoc networks. IEEE Wireless Communications 2006,13(4):62-76. 10.1109/MWC.2006.1678167View ArticleGoogle Scholar
  16. Ramanathan R: On the performance of ad hoc networks with beamforming antennas. Proceedings of the ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc '01), October 2001, Long Beach, Calif, USA 95-105.View ArticleGoogle Scholar
  17. Ramanathan R, Redi J, Santivanez C, Wiggins D, Polit S: Ad hoc networking with directional antennas: a complete system solution. IEEE Journal on Selected Areas in Communications 2005,23(3):496-506.View ArticleGoogle Scholar
  18. Gupta P, Kumar PR: Towards an information theory of large networks: an achievable rate region. IEEE Transactions on Information Theory 2003,49(8):1877-1894. 10.1109/TIT.2003.814480MATHMathSciNetView ArticleGoogle Scholar
  19. Winters JH: Smart antennas for wireless systems. IEEE Personal Communications 1998,5(1):23-27. 10.1109/98.656155View ArticleGoogle Scholar
  20. Castellanos D:The ubiquitous . Mathematics Magazine 1988,61(2):67-98. 10.2307/2690037MATHMathSciNetView ArticleGoogle Scholar

Copyright

© Eugene Perevalov et al. 2007

This article is published under license to BioMed Central Ltd. 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.