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| FAST ALGORITHMS FOR THE CONSTRAINED AND UNCONSTRAINED FREQUENCY DOMAIN BLOCK-LMS ADAPTIVE FILTERS |
| He Hanxiang; Yin Junxun; Ouyang Jingzheng |
| South China University of Technology Guangzhou 510641 |
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Abstract In this paper,the updating equations of FBLMS and UFBLMS algorithms are transformed into the time domain,then two algorithms(FOBA and UFOBA) are presented by employing time-varying convergence factors which are optimized in a least-square(LS) sense respectively.Although FOBA and UFOBA algorithms require a relatively modest increase in computation for each block iteration compared to FBLMS and UFBLMS algorithms respectively,it is shown by simulations that these algorithms improve convergence speed and accucary of adaptation.
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Received: 31 March 1997
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1998, Vol. 20 
