NOVEL LSCM BEAM-FORMING ALGORITHM IN SMART ANTENNA MC-CDMA SYSTEM

作     者：Fu Hongliang Feng Guangzeng Fu Hongliang* ** Feng Guangzeng* *(Nanjing University of the Posts and Telecommunications, Nanjing 210003, China) **(Henan University of Technology, Zhengzhou 450052, China)

作者机构：Nanjing University of the Posts and Telecommunications Nanjing 210003 China Henan University of Technology Zhengzhou 450052 China 

出 版 物：《Journal of Electronics(China)》 (电子科学学刊（英文版）)

年 卷 期：2006年第23卷第4期

页      面：501-505页

学科分类：0810[工学-信息与通信工程] 08[工学] 

基　　金：Sponsored by the National Natural Science Fundation of China (No.60472104)  Natural Science Research Project of Jiangsu Province (04KJB510094) and Doctoral In-novative Fund of Jiangsu Province (xm04-32). 

主　　题：天线 CDMA 码分多址 最小平方常量模数 误差率 

摘      要：A novel Least Squares Constant Modulus (LSCM) beam-forming algorithm in smart antenna Multi-Carrier Code Division Multiple Access (MC-CDMA) system is proposed in this paper. It adaptively beam-forms the multi-carrier antenna array signal using the LSCM Algorithm (LSCMA), and in the meantime, the beam-formed signals on every sub-carrier are combined by using Orthogonal Restore Combination (ORC), Equal Gain Combination (EGC) or Maximum Ratio Combination (MRC). Then the decision of the combined signals and the spread-code of the expected user are used to re-construct the signals on every sub-carrier. At last, the difference between the re-constructed signal and the output signal of the beam-former is used to con-trol the coefficients of the beam-former. The bit error probability of the proposed algorithm is analyzed. We simulated and compared it with the conventional LSCM beam-forming algorithm. Simulation results show that the proposed algorithm is superior to the latter in Bit Error Rate (BER).