標題: On Capacity of the Writing Onto Fast Fading Dirt Channel
作者: Rini, Stefano
Shamai Shitz), Shlomo
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: Gel'fand-Pinsker channel;writing on fading dirt channel;fast fading;partial channel side information;Costa pre-coding;interference pre-cancellation
公開日期: 1-Nov-2018
摘要: The Writing onto Fast Fading Dirt (WFFD) channel is investigated to study the effect of partial channel knowledge on the performance of interference pre-cancellation. The WFFD channel is the Gel'fand-Pinsker channel in which the channel output is the sum of the channel input, white Gaussian noise, and a fading-times-state term. The fading-times-state term is obtained as the product of the channel state sequence, known only at the transmitter, and a fast fading process, known only at the receiver. We consider the case of Gaussian-distributed channel states and derive an approximate characterization of capacity for different classes of fading distributions, both continuous and discrete. In particular, we prove that if the fading distribution concentrates in a sufficiently small interval, then capacity is approximately equal to the AWGN capacity times the probability of such interval. We also show that there exists a class of fading distributions for which having the transmitter treat the fading-times-state term as additional noise closely approaches capacity.
URI: http://dx.doi.org/10.1109/TWC.2018.2866841
http://hdl.handle.net/11536/148452
ISSN: 1536-1276
DOI: 10.1109/TWC.2018.2866841
期刊: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume: 17
起始頁: 7411
結束頁: 7424
Appears in Collections:Articles