Paper Info
Title
On the Statistics and MAC Implications of Channel Estimation Errors in MIMO Ad Hoc Networks
Abstract
In this paper, we propose an analytical technique to evaluate the statistics of the channel estimation error in a simple multi-user ad hoc networking scenario. This problem is very relevant in situations where advanced PHY techniques are used (e.g., MIMO or interference cancellation) and channel state information may be needed. The presence of several simultaneous and non-orthogonal signals makes the problems significantly more complicated than in traditional channel estimation. In particular, there is direct dependence of the channel estimation error on the instantaneous channel matrix. The proposed model makes it possible to quickly evaluate the performance of channel estimation schemes as a function of the system parameters. In this light, we include the effect of channel estimation errors in an ad hoc networking protocol simulator and thoroughly evaluate their impact. Our results show that there exists a significant interplay between the performance of MAC protocols for MIMO networks and the accuracy of channel estimation. Moreover, we show that relevant tradeoffs arise between MAC-and PHY-level parameters which lead to the definition of design guidelines.
Year
DOI
Venue
2008
10.1109/GLOCOM.2008.ECP.136
IEEE Global Telecommunications Conference (Globecom)
Keywords
Field
DocType
ad hoc network,channel state information,antennas,interference cancellation,ad hoc networks
Computer science,Matrix (mathematics),Single antenna interference cancellation,MIMO,Computer network,Communication channel,Analytical technique,PHY,Wireless ad hoc network,Statistics,Channel state information
Conference
ISSN
Citations 
PageRank 
1930-529X
3
0.44
References 
Authors
5
3
Name
Order
Citations
PageRank
Davide Chiarotto1202.55
Paolo Casari233432.89
Michele Zorzi37079736.49