Stage-by-stage successive MIMO decoding for multihop communications
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United States of America Patent
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Jan 9, 2018
Grant Date -
Oct 20, 2016
app pub date -
Apr 14, 2016
filing date -
Apr 15, 2015
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Abstract
According to some embodiments, a method of estimating a relayed wireless signal in a multihop network comprises receiving, at a destination network node, a wireless signal relayed from a plurality of network nodes. The received wireless signal comprises successive quantizations of a source wireless signal performed at each relay stage. The destination network node also receives a plurality of messages, each including quantization information associated with the quantization performed at a corresponding relay stage. The destination network node estimates a wireless signal received at a previous relay stage using a quantized multiple-input multiple-output (MIMO) channel model with the received wireless signal and a message corresponding to the quantization performed at the previous relay stage. The destination network node estimates the source wireless signal using the estimated wireless signal received at the previous stage and the remaining messages to estimate a wireless signal received at each of the previous relay stages.
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