近年來，手機平板的無線行動裝置與多媒體系統普及化下，對於網路的要求日益增加，使得無線通訊系統體資料傳輸量呈現爆炸成長，然而基地台數量卻沒有有效的成長，使得基地台承受更大負擔，因此Device to Device(D2D)通訊傳輸技術越來越受到討論，由於不須基地台轉送直接進行通訊技術，可有效增加總體傳輸量，並減輕基地台的負擔。本論文將探討分散式架構下的Ad-hoc D2D資料傳輸率的最佳化與分析，在SINR限制、功率上下限、單一資料傳輸率下限，主要使用的求解方式有Lagrange multiplier method(拉格朗日乘數法)以及梯度下降法(gradient descent)。

In recently, with the popularity of wireless devices and multimedia systems for mobiles and tablets, the demand for networks is increasing, which has caused the data transmission of wireless communication systems to explode rapidly. However, the number of base stations has not been effectively grown, which makes base stations more burdened. Therefore, Device to Device (D2D) communication transmission technology is more and more discussed. Because of D2D communication, devices directly transfer with others without using the base staion, the overall transmission amount can be effectively increased, and the burden on the base station can be reduced. This paper will explore the optimization and analysis of Ad-hoc D2D data transmission rate based the distributed architecture. In the SINR limit, the limits of the upper and lower power, and the lower limit of single data transmission rate. Finally, the main solution is Lagrange multiplier method and gradient descent.

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