WCDMA系統(tǒng)基站陣列接收方案帶訓(xùn)練序列的LMS-DRMAT算法
The reception scheme at base station for WCDMA system LMS-DRMTA algorithm with training sequence
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摘要: 該文針對WCMA系統(tǒng)上行鏈路幀結(jié)構(gòu)的特征,將Z.Rong(1997)提出的LS-DRMTA改進(jìn)為利用WCDMA上行鏈路幀結(jié)構(gòu)中的導(dǎo)頻位(pilot bit)作為訓(xùn)練序列的LMS-DRMTA算法。這種新的陣列接收CDMA解調(diào)算法相對于LS-DRMTA算法大大降低了基站處理的運(yùn)算量,提高了算法的實(shí)用性,仿真實(shí)驗(yàn)還表明該算法比原算法具有更低的誤碼率。
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關(guān)鍵詞:
- WCDMA; 上行鏈路; 幀結(jié)構(gòu); 智能天線; 導(dǎo)頻位
Abstract: In accordance with the uplink frame structure of WCDMA system, this paper develops the LS-DRMAT algorithm proposed by Z. Rong, et al.(1997) into a new algorithm named LMS-DRMAT with training sequence. The use of training sequence does not complicate the application of the new algorithm in WCDMA system because the existed pilot bits in each WCDMA frame slot act as the the training sequence for the new algorithm. The proposed algorithm cuts down lots of computational complexity of LS-DRMAT algorithm which simplifies its application in WCDMA system. Furthermore, the simulation experiments indicate that the new algorithm can perform much lower BER than LS-DRMAT. -
L.C. Godara, Applications of antenna arrays to mobile communications, Part I: Performance improvement, feasibility, and system considerations, Proc. IEEE, 1997, 85(7), 1031-1060.[2]B.G. Agee, Blind separation and capture of the communication signals using a multitarget constant modulus beamformer, Proc. IEEE Military Comm. Conf., Boston, MA, USA, 1989,19.2.1-19.2.7.[3]Z. Rong, et al., Simulation of multitarget adaptive array algorithms for wireless CDMA systems,IEEE Vehicular Technology Conf., Phoenix, AZ, May 5-7, 1997, 1-5.[4]Z. Rong, et al., Despread-respread multi-target constant modulus array for CDMA systems, IEEE Communications Letters, 1997, 1(4), 114-116.[5]3G TS 25.211 V3.2.0 (2000-03) Physical channels and mapping of transport channels onto physical channels (FDD). ［6］S. Haykin, Adaptive Filter Theory, Prentice Hall, 1998, Chapter 9. 12. -
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