International Conference on Computer, Communication and Control Technologies (CCCT 03)/9th International Conference on Information Systems Analysis and Synthesis (ISAS03), Florida, Amerika Birleşik Devletleri, 31 Temmuz - 02 Ağustos 2003, ss.45-50
Smart antenna systems (SAS) are considered to be the prominent technology for CDMA based 3G systems, which provide significant capacity increase and performance enhancement at the base station. Successful implementation of SAS in 3G systems, however, requires employing adaptive beamforming algorithms which not only provide good performance but also have small computation loads. Here, we evaluate the Least-Mean-Square (LMS), Constant-Modulus (CM), and Code-Filtering-Approach (CFA) beamforming methods in terms of their performance, complexity, and convergence rate for cdma2000 reverse link. Simulations are performed by assuming that 5-element uniform linear array receivers the signal transmitted from the mobile operating in cdma2000 radio configuration 1 (RC1), along with multipaths and multiple access interference. The results show that although the CFA provides the highest SINR, it requires high computation loads in order of O(m(3)). CM beamforming yields SINR performance comparable to CFA with computation complexity.