Asymptotic Capacity of Large Relay Networks with Conferencing Links

作者：Huang Chuan^*; Jiang Jinhua; Cui Shuguang

来源：IEEE Transactions on Communications, 2012, 60(5): 1193-1198.

DOI：10.1109/TCOMM.2012.022712.110027

• Large relay networks
• conferencing
• asymptotic
• decode-and-forward
• amplify-and-forward

In this correspondence, we consider a half-duplex large relay network, consisting of one source-destination pair and N relay nodes, each of which is connected with a subset of the other relays via signal-to-noise ratio (SNR)-limited out-of-band conferencing links. The asymptotic achievable rates of two basic relaying schemes with the "p-portion" conferencing strategy are studied: For the decode-and-forward (DF) scheme, we prove that the DF rate scales as O(log(N)); for the amplify-and-forward (AF) scheme, we prove that it asymptotically achieves the capacity upper bound in some interesting scenarios as N goes to infinity.

• 出版日期2012-5