|Stochastic Systems Group|
Peaky Transmission and the Cost of Channel Knowledge
Professor Lizhong Zheng - LIDS, MIT
We study the capacity of fading channels with no CSI at both the transmitter and the receiver. We focus on the low SNR regime, and study the impact of channel memory on the capacity. While the current results on these issues are based on various limiting assumptions, we use a new approach of asymptotic analysis to capture the relation among the key system parameters, and depict the continuum between the extreme cases. We draw connections to channels with transmission overhead, and express the cost of channel knowledge in terms of an energy overhead. The method of asymptotic analysis we used in this study can be used in a variety of problems.
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