Computation over Mismatched Channels

Details Computation over Mismatched Channels Computation over Mismatched Channels

2012-04-23

arxiv.org/abs/1204.5059v1

Computer Science

Information Theory

22 pages

Scientific paper

We consider the problem of distributed computation of a target function over a multiple-access channel. If the target and channel functions are matched (i.e., compute the same function), significant performance gains can be obtained by jointly designing the computation and communication tasks. However, in most situations there is mismatch between these two functions. In this work, we analyze the impact of this mismatch on the performance gains achievable with joint computation and communication designs over separation-based designs. We show that for most pairs of target and channel functions there is no such gain, and separation of computation and communication is optimal.

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