CaltechAUTHORS
  A Caltech Library Service

Throughput analysis in wideband MIMO broadcast channels with partial feedback

Fakhereddin, Maralle J. and Sharif, Masoud and Hassibi, Babak (2005) Throughput analysis in wideband MIMO broadcast channels with partial feedback. In: 2005 IEEE 6th Workshop on Signal Processing Advances in Wireless Communications. IEEE , Piscataway, NJ, pp. 771-775. ISBN 0-7803-8867-4 http://resolver.caltech.edu/CaltechAUTHORS:20110817-075126475

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20110817-075126475

Abstract

It has been recently shown that opportunistic transmit beamforming using partial channel state information (CSI) achieves the same throughput scaling obtained from dirty paper coding for a broadcast channel with fixed number of transmit antennas and many receivers M. Sharif et al., (2005). In this paper, we study the generalization of this scheme to wideband broadcast channels. By using orthogonal frequency division multiplexing, an L-tap wideband channel can be decomposed to N parallel narrowband channels, where N is larger than L. Neighboring subchannels are therefore highly correlated, and it is intuitive to say that each group of neighboring subchannels (forming a cluster) can be characterized by one channel quality. We show in this paper that users need only feedback the best signal-to-noise-plus-interference ratio at the center of each cluster. Our results indicate that for cluster size of order ^N/_(L√logK), where K is the number of users, this feedback scheme maintains the same throughput scaling as when full CSI is known. Simulation results show that larger cluster sizes (^N/_(2L)) can also be implemented for a small throughput hit.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/ 10.1109/SPAWC.2005.1506244DOIUNSPECIFIED
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1506244&tag=1PublisherUNSPECIFIED
Additional Information:© 2005 IEEE. Issue Date: 5-8 June 2005. Date of Current Version: 12 September 2005. This work was supported in part by the National Science Foundation under grant no. CCR-0133818, by the office of Naval Research under grant no. ND0014-02-1-0578, and by Caltech’s Lee Center for Advanced Networking.
Funders:
Funding AgencyGrant Number
NSFCCR-0133818
Office of Naval Research (ONR)N00014-02-1-0578
Caltech Lee Center for Advanced NetworkingUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
INSPEC Accession Number8670285
Record Number:CaltechAUTHORS:20110817-075126475
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110817-075126475
Official Citation:Fakhereddin, M.J.; Sharif, M.; Hassibi, B.; , "Throughput analysis in wideband MIMO broadcast channels with partial feedback," Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on , vol., no., pp. 771- 775, 5-8 June 2005 doi: 10.1109/SPAWC.2005.1506244 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1506244&isnumber=32243
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24899
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:17 Aug 2011 15:23
Last Modified:17 Aug 2011 15:25

Repository Staff Only: item control page