Title :
Low-power signaling in asymmetric noisy channels via spectral shaping
Author :
Sipitca, Mihai ; Madisetti, Vijay K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Portable and mobile applications require low power consumption in addition to high throughput to prolong battery life in a VLSI implementation. The authors propose a novel configuration of a low-power portable communications (PCS) device that promises improved performance over very noisy band-limited channels through the use of a feedback channel and digital signal processing techniques that have their origins in sigma-delta modulation. Comparisons with PCM using raised-cosine pulses illustrate the design tradeoffs.<>
Keywords :
analogue-digital conversion; delta modulation; digital radio systems; interference suppression; mobile radio systems; radiofrequency interference; spectral analysis; telecommunication channels; telecommunication signalling; asymmetric noisy channels; digital signal processing techniques; feedback channel; low-power portable communications; noisy band-limited channels; power consumption; sigma-delta modulation; spectral shaping; Batteries; Delta-sigma modulation; Digital signal processing; Energy consumption; Feedback; Mobile communication; Noise shaping; Personal communication networks; Throughput; Very large scale integration;
Journal_Title :
Signal Processing Letters, IEEE
