1 / 1

Multi-way communication

Multi-way communication. Natasha Devroye , ECE Primary Grant Support: UIC-WISEST startup funds. Communication is its most general form is a multi-way problem rather than an aggregation of 1-way problems; messages travel --> as well as <--

Download Presentation

Multi-way communication

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Multi-way communication Natasha Devroye, ECE Primary Grant Support: UIC-WISEST startup funds • Communication is its most general form is a multi-way problem rather than an aggregation of 1-way problems; messages travel --> as well as <-- • In a wireless network we can take advantage of the ``broadcast nature’’ of wireless communication to overhear messages transmitted by other nodes and combine information traveling in many directions • Our main goal is to improve spectral efficiency (higher bits/second/hertz) in wireless networks with multi-way information flows • As a first example we consider the bi-directional relay channel: nodes a and b exchange messages through the help of a relay node r • Communication is subject to a time-division duplex constraint: a node cannot Tx and Rx at the same time • We take an information theoretic approach and obtain inner and outer bounds on the capacity region for a number of different protocols and relaying schemes: • Relaying schemes: Compress-and-forward, Decode-and-forward, Amplify-and-forward • Temporal protocols: 2 phase, 3 phase and 4 phase protocols are devised and shown to be optimal under different channel conditions • Comprehensive treatment of the single relay bi-directional channel: inner and outer bounds are tight in certain regimes • Future work will extend to multiple sources, destinations, relays. We will also consider relays which have independent messages of their own to transmit (e.g. cognitive radios)

More Related