uesr 中文意思是什麼
uesr
解釋
俄羅斯統一電力系統公司-
Multi - uesr detection ( mud ) refers to signal detection in multiple access communications. this detection has many good properties, such as decreasing multiple access interference, canceling out or moderating near - far resistance, able to decrease the requirement for output control, compensating the effects due to inoptimal orthogonality, improving system performance and increasing system capacity. mud is one of the methods that can overcome the mai in cdma with most potential and complete and becomes one of the critical techniques in the third generation mobile communication
多用戶檢測是指多址通信中的信號檢測，具有抑止多址干擾;消除或減輕遠近效應;可適當降低對功率控制的要求;彌補擴頻碼互相關性不理想造成的影響;改善系統性能，提高系統容量等眾多優點，是克服cdma多址干擾最有潛力、最徹底的一種方法，並已成為第三代移動通信標準中倡導的關鍵技術之一。 -
This paper firstly overviews the traditional pso algorithm, and introduces the stretching technique to avoid " premature " in pso and to improve the algorithm ' s ablity to search for a global optimum. the stretching technique is applied to the optimization process in mud. by viewing the objective function of mud as the algorithm ’ s fitness function, the multi - uesr detector based on the stretching pso ( spso ) is proposed
本文首先在傳統粒子群優化演算法基礎上，為避免基本粒子群優化演算法「早熟」現象，提高演算法全局尋優能力，引入了拉伸技術，並把其應用到多用戶檢測尋優過程中，將演算法適應值設為最佳多用戶檢測目標函數，提出了基於拉伸技術粒子群優化演算法的多用戶檢測器。
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