本篇論文的架構主要是合作式通訊網路(cooperative communication) 和協商演算法(parley
algorithm) 的結合。協商演算法的精神, 主要在於結點間的互相溝通, 當然在此包含終端節點
(destination) 。當節點與結點間得到共識時, 才會作出最後的決策。再結點與結點間不斷的傳
輸繼而得到決策的過程中, 我們直觀的認為結點的傳輸功率將會影響整體系統的效能。而我們
在討論工率分配的問題時, 特別將系統的通道容量(capacity) 拿出來做討論。當通道容量達最
大值時的功率分配, 在合作式網路下, 會使得結點間得到共識時的效能提高。且在系統模擬部分
我們也得到相關的驗證, 在有效的功率分配下, 系統的錯誤率相對的比在平均工率分配的錯誤率
還來的低, 則證明此作法的可效性。

This thesis proposes an alternative cooperating strategy for cooperative communications
through the use of parley algorithm in cooperative communications. When employing
parley algorithm in cooperative communications, the relay nodes and the destination node
need to disseminate and agree on a common decision throughout the cooperation network
via a consensus flooding procedure. In this thesis, a heuristic approach for improving
the performance of the parley algorithm is proposed. This heuristic approach is to design
power allocation method during each iteration of consensus flooding protocol. Specifically,
when distributing the power to each node within the cooperative network, this thesis
adopts the criterion of maximum capacity of the broadcast channel used for consensus
flooding procedures. The simulation result obtained from the investigation of this thesis
shows that the proposed power allocation approach can improve the performance in terms
of bit error rate as compared with the parley algorithm with uniform power allocation,
and, hence, confirms the proposed idea is useful.

1 Introduction 1
2 System Model and Problem Statement 4
2.0.1 Review of parley algorithm . . . . . . . . . . . . . . . . . . . . . . . 4
2.0.2 Problem Formulation . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Proposed power allocation for parley algorithm in cooperative networks 8
4 Simulation results 11
5 Conclusion 15

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