On the optimal number of hops in infrastructure-based fixed relay networks
暂无分享,去创建一个
In this paper we analyze the optimal number and locations of fixed radio relay stations forming multi-hop links in infrastructure-based wireless networks. Under the assumptions of using orthogonal channels for the hops and all links having the same average path loss exponent, we show using the spectral efficiency as a metric that the optimal relay locations are at equal intervals along the straight line between source and destination whenever multihop is to be utilized. We show that a single-hop fixed radio link can be efficiently (from a spectral efficiency perspective) replaced with the multi-hop link only if the single-hop SNR has a relatively low value. We introduce a "multi-hop criterion" to quantify the single-hop SNR value below which a more efficient multi-hop replacement exists. We also determine the optimal number of hops for the multi-hop links having relays disposed in straight line at equal intervals
[1] Errol L. Lloyd,et al. Broadcast scheduling for TDMA in wireless multihop networks , 2002 .
[2] Gerhard Fettweis,et al. Relay-based deployment concepts for wireless and mobile broadband radio , 2004, IEEE Communications Magazine.
[3] Thomas M. Cover,et al. Elements of Information Theory , 2005 .
[4] Giuseppe Caire,et al. Bit-Interleaved Coded Modulation , 2008, Found. Trends Commun. Inf. Theory.