我們提出一個簡易搜尋演算法，以減少一個在多輸入多輸出系統(MIMO)下之等增益前置編碼技術(Equal Gain Precoding)的計算複雜度和功率消耗。模擬結果顯示，我們所提出的搜尋演算法之等增益前置編碼技術，可以達到與格拉斯曼空間(Grassmannian Space)前置編碼(Precoding)演算法近似的效能且此提出的搜索演算法所需要的運算卻相對更低，而相較於格拉斯曼空間的建置困難，等增益前置編碼技術有更容易建置的特性。此外，不僅僅是單資料流的傳送，我們亦提供了在多資料流傳輸下的解決方案，將在本文做進一步解釋。

We propose a simple search algorithm to reduce the computational complexity and power consumption for equal gain precoder in a multiple-input multiple-output system. Simulation results show that the equal gain
precoder with the proposed search algorithm can achieve nearly the same performance as that of the Grassmannian precoder. The proposed search algorithm shows several advantages in practical implementation such as easier codebook construction and lower searching complexity. In addition, we also provide the solution for supporting of multiple-stream, as will be explained later in this paper.