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arXiv cs/0508020cs.ITmath.IT
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发射机和接收机协作的容量增益

Capacity Gain from Transmitter and Receiver Cooperation

Chris T. K. Ng, Andrea J. Goldsmith

摘要:

在中继网络中,合作的节点是靠近在一起的发射机和接收机合作的容量增益进行了比较。当所有节点具有相等的平均发射功率以及完整的信道状态信息(CSI)时,证明了发射机协作优于接收机协作,而当功率在节点间进行最优分配但只有接收机相位CSI可用时,则相反.此外,当节点具有相等的平均功率且仅具有接收器相位CSI时,与具有相同平均网络功率的非协作方案相比,协作并不能提供容量改善。当系统处于最优功率分配下,信道状态信息完整时,解码转发发送协作速率接近其割集容量上界,优于压缩转发接收协作。此外,它表明,完整的CSI是必不可少的发射机合作,而最优的功率分配是必不可少的接收机合作。

英文摘要:

Capacity gain from transmitter and receiver cooperation are compared in a relay network where the cooperating nodes are close together. When all nodes have equal average transmit power along with full channel state information (CSI), it is proved that transmitter cooperation outperforms receiver cooperation, whereas the opposite is true when power is optimally allocated among the nodes but only receiver phase CSI is available. In addition, when the nodes have equal average power with receiver phase CSI only, cooperation is shown to offer no capacity improvement over a non-cooperative scheme with the same average network power. When the system is under optimal power allocation with full CSI, the decode-and-forward transmitter cooperation rate is close to its cut-set capacity upper bound, and outperforms compress-and-forward receiver cooperation. Moreover, it is shown that full CSI is essential in transmitter cooperation, while optimal power allocation is essential in receiver cooperation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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