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- Title
A Fast Converge Momentum Dual-Mode Modified Constant Modulus Blind Equalization Algorithm for High-Order QAM Signals.
- Authors
Sun, Yongjun; Liang, Zhongfa; Jia, Cuiyuan
- Abstract
A dual-mode blind channel equalization algorithm for high-order quadrature amplitude modulation (QAM) signals is proposed. The proposed algorithm, named momentum constellation matching error modified constant modulus algorithm (MCME-MCMA), firstly starts the equalization by momentum MCMA algorithm, and then introduces a constellation matching error term when it beginning to converge, which significantly reduces the steady-state mean square error (MSE). An optimized switching-point is provided and confirmed by simulations. Simulations demonstrate that MCME-MCMA improves the convergence rate and decreases the MSE by 5-7 dB for 64-QAM and 256-QAM compared with that of MCMA.
- Subjects
BLIND channel identification (Telecommunications); QUADRATURE amplitude modulation; ALGORITHMS; STEADY-state flow; MEAN square algorithms
- Publication
Wireless Personal Communications, 2015, Vol 83, Issue 4, p3045
- ISSN
0929-6212
- Publication type
Article
- DOI
10.1007/s11277-015-2581-1