支持基于点阵划分的非正交多重接取的基站及调制方法

專利類型

發明

專利國別 (專利申請國家)

大陸

專利申請案號

202010273817.1

專利證號

5286348

專利獲證名稱

支持基于点阵划分的非正交多重接取的基站及调制方法

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2022/07/05

技術說明

近幾年來，基於點陣劃分(lattice-partition-based)之非正交多重接取(NOMA)系統相關的研究逐漸受到關注，此種系統在傳送端採用與實際相符的離散輸入訊號，且在接收端不須使用連續干擾消除技術來輔助訊號偵測。文獻上的資料已證實，點陣劃分作法可降低NOMA系統的複雜度，並同時逼近理論上的通訊容量區域。本發明揭露一種支援基於點陣劃分的下行非正交多重接取的基站及調變方法。調變方法包含：將弱用戶設備的至少一最高有效位元調變為具有第一傳輸功率；將弱用戶設備的至少一最低有效位元調變為具有第二傳輸功率，其中第二傳輸功率小於第一傳輸功率；以及將強用戶設備的至少一第二最高有效位元調變為具有第三傳輸功率，其中第三傳輸功率介於第一傳輸功率與第二傳輸功率之間。 In recent years, there has been a growing interest in investigating lattice-partition-based (LP-based) non-orthogonal multiple access (NOMA) transmission with practical discrete input signals at the transmitter and without using successive interference cancellation for signal detection at the receivers. It was shown that LP-based NOMA involves lower complexity than conventional NOMA and can approach the capacity region. This invention discloses a base station and a modulation method supporting LP-based downlink NOMA. The modulation method includes: modulating at least one most significant bit (MSB) of a weak user equipment (UE) to have a first transmission power; modulating at least one least significant bit (LSB) of the weak UE to have a second transmission power, wherein the second transmission power is less than the first transmission power; and modulating at least one second MSB of a strong UE to have a third transmission power, wherein the third transmission power is between the first transmission power and the second transmission power.

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