Title :
A new VLSI design for adaptive frequency-detection based on the active oscillator
Author :
Sheu, Ming-hwa ; Liao, Ho-En ; Yang, Shr-Shian
Author_Institution :
Dept. of Electr. Eng., Nat. Yunline Univ. of Sci. & Technol., Taiwan
Abstract :
In this paper, we propose a novel adaptive algorithm to detect the frequency in a noisy environment and its VLSI implementation. The algorithm is computationally efficient since we utilize the special structure of an active oscillator, which results in an adaptive one-coefficient FIR filter realization. A method using the Lagrange multiplier based LMS algorithm is derived for coefficient updating. Based on the proposed algorithm, a high performance VLSI architecture is designed in fixed point operation to reduce the hardware cost. After function simulation, the architecture is implemented by 0.6 μm CMOS technology. Its chip area is 2899×2899 um2 and the working frequency is 75 MHz
Keywords :
CMOS digital integrated circuits; FIR filters; VLSI; adaptive filters; adaptive signal detection; detector circuits; digital signal processing chips; high-speed integrated circuits; interference suppression; least mean squares methods; noise; oscillators; real-time systems; telecommunication computing; 0.6 micron; 75 MHz; CMOS technology; DSP; Lagrange multiplier based LMS algorithm; VLSI design; VLSI implementation; active oscillator; adaptive algorithm; adaptive frequency-detection; adaptive one-coefficient FIR filter realization; coefficient updating; fixed point operation; high performance VLSI architecture; noisy environment; Adaptive algorithm; CMOS technology; Computer architecture; Finite impulse response filter; Frequency; Lagrangian functions; Least squares approximation; Oscillators; Very large scale integration; Working environment noise;
Conference_Titel :
ASICs, 2000. AP-ASIC 2000. Proceedings of the Second IEEE Asia Pacific Conference on
Conference_Location :
Cheju
Print_ISBN :
0-7803-6470-8
DOI :
10.1109/APASIC.2000.896924
