نتایج جستجو برای: relay selection
تعداد نتایج: 333734 فیلتر نتایج به سال:
Wireless network is one of the most prior network veils in today’s times. It is being widely because of its easy development and low cost of access. IEEE 802.11 is one of the known standard which provides various transmission rates such as IEEE 802.11 a, b, g and because of their multiple support for transmission rates enhance the usage of WLAN. In this paper, we describes about the protocols w...
Cooperative communication can improve communication quality in wireless communication networks through strategic relay selection. However, wireless cooperative communication networks are vulnerable to the attacks initiated on relays. Although applying authentication protocols can secure cooperative communication when the selected relay is malicious, better system throughput could be obtained wi...
—To improve the problems of noise amplification and error propagation of the fixed cooperation schemes in cooperative communications, a relay selection strategy is proposed based on the hybrid decode-amplify-forward protocol. It can adaptively determine cooperation schemes according to the Channel Status Information (CSI) of the source-relay. Then it selects the best relay from the candidate r...
In this paper, distributed relay diversity systems are analyzed, modeled and evaluated in an Orthogonal Frequency Division Multiplexing (OFDM) based networks. The investigated distributed relay diversity schemes extend the ideas of a single hop transmit antenna schemes such as Cyclic Delay Diversity (CDD), Space Time Transmit Diversity (STTD), transmit Coherent Combining (CC) and Selection Dive...
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