Title :
Paper Application of Partial Coefficient Update LMS Algorithm to Suppress Narrowband Interference in DSSS System
Author :
Wang, ZhangSheng ; Lv, Ming ; Tang, Bin
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
Transform domain LMS is discussed in this paper and a partial coefficient update LMS adaptive algorithm (P-LMS) is proposed to suppress narrowband interference in DSSS system. In the new algorithm, it only updates a portion of the coefficients of the adaptive filter, so it reduces a lot of computation. It is convenient to implement on FPGA/DSP. The algorithm also has faster convergence speed and little steady state error. The algorithm is applied to the DSSS system to suppress narrowband interference system and it works very well. Computer simulation results confirm the theoretical analysis.
Keywords :
adaptive filters; interference suppression; least mean squares methods; radiofrequency interference; spread spectrum communication; DSSS system; FPGA-DSP implelentation; adaptive filter; direct spread spectrum sequences; narrowband interference suppression; paper application; partial coefficient update LMS algorithm; steady state error; theoretical analysis; transform domain LMS; Adaptive algorithm; Adaptive filters; Convergence; Digital signal processing; Field programmable gate arrays; Interference suppression; Least squares approximation; Narrowband; Spread spectrum communication; Steady-state; DSSS system; MVSSLMS algorithm; NBI; P-LMS; Transform Domain LMS;
Conference_Titel :
Communication Software and Networks, 2009. ICCSN '09. International Conference on
Conference_Location :
Macau
Print_ISBN :
978-0-7695-3522-7
DOI :
10.1109/ICCSN.2009.139
