Title :
Controlling clipping probability in DMT transmission
Author :
Gatherer, Alan ; Polley, M.
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
A discrete multitone signal has a much higher peak to average ratio than a comparable single tone modulation signal. Therefore a DMT transmitter has to either have a significantly more expensive analog front end (both in terms of the DAC, the analog filter and line driver) or it has to control the amount of clipping. We describe two general techniques for clipping control and present performance comparisons to previous techniques.
Keywords :
parameter estimation; probability; quadrature amplitude modulation; signal processing; subscriber loops; ADSL; COFDM; DAC; DMT transmission; Fourier projection algorithm; QAM signals; analog filter; analog front end; asymmetric digital subscriber line; clipping probability control; discrete multitone signal; line driver; parameter estimation; peak to average ratio; performance; projection onto convex sets; single tone modulation signal; Decoding; Frequency; Instruments; Noise cancellation; Noise shaping; OFDM modulation; Peak to average power ratio; Signal processing algorithms; Signal to noise ratio; Transmitters;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.680443
