Computer Science – Information Theory
Scientific paper
2010-01-21
Computer Science
Information Theory
5 pages, submitted to IEEE ISIT, 2010
Scientific paper
A half-duplex wireless network with 6 lateral nodes, 3 transmitters and 3 receivers, and a central relay is considered. The transmitters wish to send information to their corresponding receivers via a two phase communication protocol. The receivers decode their desired messages by using side information and the signals received from the relay. We derive an outer bound on the capacity region of any two phase protocol as well as 3 achievable regions by employing different relaying strategies. In particular, we combine physical and network layer coding to take advantage of the interference at the relay, using, for example, lattice-based codes. We then specialize our results to the exchange rate. It is shown that for any snr, we can achieve within 0.5 bit of the upper bound by lattice coding and within 0.34 bit, if we take the best of the 3 strategies. Also, for high snr, lattice coding is within log(3)/4 ~ 0.4 bit of the upper bound.
Mitran Patrick
Saffar Hamidreza Ebrahimzadeh
No associations
LandOfFree
Capacity Bounds and Lattice Coding for the Star Relay Network does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Capacity Bounds and Lattice Coding for the Star Relay Network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacity Bounds and Lattice Coding for the Star Relay Network will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-248658