TY - JOUR
T1 - Segment cooperation communication in multi-hop wireless networks
AU - Li, Yun
AU - Wang, Chonggang
AU - Wang, Rui
AU - Daneshmand, Mahmoud
AU - You, Xiaohu
PY - 2012/10
Y1 - 2012/10
N2 - Cooperative communication could enhance the performance of wireless communications by allowing nodes to cooperate with each other to provide spatial diversity gain. In cooperative communications, rational helper selection is an important issue to obtain good cooperative gain at destinations. There are many works on this topic; however, most of them are based on hop-by-hop model and few works investigate how to select helpers for the nodes in a multi-hop path to optimize the end-to-end performance. The helper selection for one node could affect the helper selection for other nodes on the same route and in turn affect end-to-end performance. In other words, the traditional hop-by-hop helper selection methods could not lead to optimal performance in multi-hop environments. To solve this, this paper firstly defines a novel cooperation mode, named segment cooperation, and deduces the capacity and outage probability of cooperation segment. Then new performance metrics, end-to-end capacity and end-to-end outage probability, are defined to measure the end-to-end performance of multi-hop route. Finally, a segment cooperation method is proposed to maximize these metrics.
AB - Cooperative communication could enhance the performance of wireless communications by allowing nodes to cooperate with each other to provide spatial diversity gain. In cooperative communications, rational helper selection is an important issue to obtain good cooperative gain at destinations. There are many works on this topic; however, most of them are based on hop-by-hop model and few works investigate how to select helpers for the nodes in a multi-hop path to optimize the end-to-end performance. The helper selection for one node could affect the helper selection for other nodes on the same route and in turn affect end-to-end performance. In other words, the traditional hop-by-hop helper selection methods could not lead to optimal performance in multi-hop environments. To solve this, this paper firstly defines a novel cooperation mode, named segment cooperation, and deduces the capacity and outage probability of cooperation segment. Then new performance metrics, end-to-end capacity and end-to-end outage probability, are defined to measure the end-to-end performance of multi-hop route. Finally, a segment cooperation method is proposed to maximize these metrics.
KW - Capacity
KW - Multi-hop
KW - Outage probability
KW - Segment cooperation
UR - http://www.scopus.com/inward/record.url?scp=84869866291&partnerID=8YFLogxK
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U2 - 10.1007/s11276-012-0436-1
DO - 10.1007/s11276-012-0436-1
M3 - Article
AN - SCOPUS:84869866291
SN - 1022-0038
VL - 18
SP - 827
EP - 836
JO - Wireless Networks
JF - Wireless Networks
IS - 7
ER -