JOINT POWER ALLOCATION, PRECODING, AND DECODING METHOD AND BASE STATION THEREOF

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

15/658,416

專利證號

US 10,079,627 B1

專利獲證名稱

JOINT POWER ALLOCATION, PRECODING, AND DECODING METHOD AND BASE STATION THEREOF

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2018/09/18

技術說明

本發明提供一種聯合功率分配、預編碼與解碼方法及其基地台，適用於多輸入多輸出非正交多重接取（MIMO-NOMA）系統。本發明之方法包括下列步驟：（1）將各個群組所對應的預編碼器分解為第一預編碼器乘上第二預編碼器；（2）取得各個群組中所有使用者裝置之解碼訊號的均方誤差（mean-squared error，MSE）函式；（3）在最小化一群組中的所有MSE函式之最大值的情況下計算各個群組的功率分配因子；以及（4）根據所計算出的功率分配因子，在總傳輸功率限制的情況下透過最小化所有群組中所有使用者裝置之解碼訊號的MSE函式總和來取得各個群組的第二預編碼器與解碼器。 This invention provides a joint power allocation, precoding, and decoding method and a base station thereof. They are applicable to multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) systems. The method includes: (1) decomposing the precoder for each cluster into a first precoder and a second precoder; (2) obtaining the mean-squared error (MSE) functions of the decoded signals for all user devices in each cluster; (3) calculating the power allocation factors for each cluster in the case of minimizing the maximum of all the MSE functions in each cluster; and (4) obtaining the second precoder and the decoder for each cluster in the case of minimizing the sum of MSE functions of the decoded signals for all user devices in all clusters under a total power constraint according to the power allocation factors.

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