DMCA
Communication on the Grassmann Manifold: A Geometric Approach to the Noncoherent Multiple-Antenna Channel (2002)
Cached
Download Links
- [degas.eecs.berkeley.edu]
- [www.eecs.berkeley.edu]
- [degas.eecs.berkeley.edu]
- DBLP
Other Repositories/Bibliography
| Venue: | IEEE TRANS. INFORM. THEORY |
| Citations: | 273 - 7 self |
BibTeX
@ARTICLE{Zheng02communicationon,
author = {Lizhong Zheng and David N. C. Tse},
title = {Communication on the Grassmann Manifold: A Geometric Approach to the Noncoherent Multiple-Antenna Channel},
journal = {IEEE TRANS. INFORM. THEORY},
year = {2002},
volume = {48},
pages = {359--383}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
In this paper, we study the capacity of multiple-antenna fading channels. We focus on the scenario where the fading coefficients vary quickly; thus an accurate estimation of the coefficients is generally not available to either the transmitter or the receiver. We use a noncoherent block fading model proposed by Marzetta and Hochwald. The model does not assume any channel side information at the receiver or at the transmitter, but assumes that the coefficients remain constant for a coherence interval of length symbol periods. We compute the asymptotic capacity of this channel at high signal-to-noise ratio (SNR) in terms of the coherence time , the number of transmit antennas , and the number of receive antennas . While the capacity gain of the coherent multiple antenna channel is min bits per second per hertz for every 3-dB increase in SNR, the corresponding gain for the noncoherent channel turns out to be (1 ) bits per second per herz, where = min 2 . The capacity expression has a geometric interpretation as sphere packing in the Grassmann manifold.
Keyphrases
grassmann manifold noncoherent multiple-antenna channel geometric approach noncoherent block geometric interpretation coherent multiple antenna channel fading coefficient capacity gain multiple-antenna fading channel accurate estimation capacity expression corresponding gain coherence time transmit antenna min bit channel side information receive antenna high signal-to-noise ratio 3-db increase noncoherent channel length symbol period asymptotic capacity coherence interval
