A Multi-Gradients Algorithm for the Channel Equalizer of the Parallel Structure
Xinlin Wang, Bin Liu, Haibin Li · DOAJ (DOAJ: Directory of Open Access Journals) · 2014
With the development of science and technology, the information exchange rate on communication network is increasing gradually. The data throughput of the conventional structure equalizer is limited by the running speed of the electronic device, and result in that information exchange rate in the network is restricted. To achieve a high throughput of the transmission data, the parallel structure of the channel equalizer is designed, and the corresponding algorithms are studied. The paper proposes a Multi-Gradients Algorithm architecture based on a modified version of the standard Bussgang algorithm for the parallel structure equalizer. The convergence characteristics of the algorithm can be improved while the data throughput of the parallel equalizer is maintained. A Multi- Gradients constant modulus Algorithm and A Multi-Gradients multi-modulus Algorithm are given by using Multi-Gradients Algorithm architecture on constant algorithm and multi-modulus. Simulation results demonstrate that using MG-CMA and MG-MMA improve the performance of the channel equalizer by increasing the convergence rate and enhance the data throughput.