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Communication Via Decentralized Processing

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4 Author(s)
Amichai Sanderovich ; Dept. of Electr. Eng., Technion - Israel Inst. of Technol., Haifa ; Shlomo Shamai ; Yossef Steinberg ; Gerhard Kramer

The problem of a nomadic terminal sending information to a remote destination via agents with lossless connections to the destination is investigated. Such a setting suits, e.g., access points of a wireless network where each access point is connected by a wire to a wireline-based network. The Gaussian codebook capacity for the case where the agents do not have any decoding ability is characterized for the Gaussian channel. This restriction is demonstrated to be severe, and allowing the nomadic transmitter to use other signaling improves the rate. For both general and degraded discrete memoryless channels, lower and upper bounds on the capacity are derived. An achievable rate with unrestricted agents, which are capable of decoding, is also given and then used to characterize the capacity for the deterministic channel.

Published in:

IEEE Transactions on Information Theory  (Volume:54 ,  Issue: 7 )