Ergodic Interference Alignment with Delayed Feedback
Myung Gil Kang, Wan Choi
TL;DR
This paper introduces novel ergodic interference alignment methods for K-user interference channels with delayed feedback, achieving higher degrees of freedom than previous retrospective methods.
Contribution
It presents new ergodic interference alignment techniques for delayed feedback scenarios, improving the total degrees of freedom in K-user interference channels.
Findings
Achieves total 2K/(K+2) DoF with the proposed methods.
Outperforms retrospective interference alignment in delayed feedback scenarios.
Applicable to both delayed channel information and output feedback scenarios.
Abstract
We propose new ergodic interference alignment techniques for -user interference channels with delayed feedback. Two delayed feedback scenarios are considered -- delayed channel information at transmitter (CIT) and delayed output feedback. It is proved that the proposed techniques achieve total DoF which is higher than that by the retrospective interference alignment for the delayed feedback scenarios.
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Wireless Communication Security Techniques · Cooperative Communication and Network Coding