DocumentCode
1760250
Title
Functional Forwarding of Channel State Information
Author
Jiening Zhan ; Gastpar, Michael
Author_Institution
Dept. of Electr. Eng. & Comput. Sci., Univ. of California, Berkeley, Berkeley, CA, USA
Volume
60
Issue
2
fYear
2014
fDate
Feb. 2014
Firstpage
1008
Lastpage
1018
Abstract
Based on the recent compute-and-forward technique , a novel communication strategy is proposed under which functions of the channel state information are forwarded along the network. Those functions are chosen such that on the one hand, they can be efficiently forwarded, and on the other hand, they are maximally useful to the final decoder of the message. It is illustrated that there is generally a tension between these two requirements. The strategy is shown to perform well for certain classes of multilayer networks where channel state information is acquired locally at each receiver. For example, for a two-stage Gaussian relay network with local channel state information, it is shown that the proposed strategy performs optimally in a scaling-law sense, as the number of relays increases.
Keywords
Gaussian channels; decoding; fading channels; relay networks (telecommunication); statistical distributions; channel state information; compute-and-forward technique; final message decoder; function forwarding; multilayer networks; scaling-law sense; two-stage Gaussian relay network; Bandwidth; Channel state information; Decoding; Fading; Government; Receivers; Relays; Channel state information (CSI); distributed computation; lattices; relay networks;
fLanguage
English
Journal_Title
Information Theory, IEEE Transactions on
Publisher
ieee
ISSN
0018-9448
Type
jour
DOI
10.1109/TIT.2013.2291002
Filename
6665125
Link To Document