FPGA Implementation of LMS and NLMS adaptive filters for acoustic echo cancellation
Journal Title: Acta Technica Napocensis- Electronica-Telecomunicatii (Electronics and Telecommunications) - Year 2011, Vol 52, Issue 4
Abstract
The paper proposes a register transfer level (RTL) description of two well-known adaptive algorithms used in acoustic echo cancellation: the Least Mean Square (LMS) and Normalized Least Mean Square (NLMS). The RTL descriptions of both algorithms are based on their finite state machine (FSM) diagrams and were created in the popular VHDL language. ModelSim simulation results altogether whit plots obtained in Matlab prove the good behavior. As it was expected, the performance of the NLMS algorithm is superior, compared to the LMS algorithm, in term of Mean Square Error (MSE).
Authors and Affiliations
Irina MURESAN, Ioana HOMANA, Marina TOPA, Cristian CONTAN
Keywords
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