Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
Multi-carrier transmission systems
A multi-carrier transmission system. A received multi-carrier signal is sampled and digitized before FFT processing. Multi-carrier signals consist of many narrow band carrier waves which convey data via a wide band channel. The amplitude distribution of the sum of all the individual carriers is Gaussian. This means that high amplitudes occur with low probability. At the present time, analog to digital converters have a limited dynamic range. It is therefore normal practice to provide a compromise between cutting and quantization noise. The adverse affects of a course quantization have to be balanced between signal distortions caused by the loss of the low probability high amplitude signals.
STMicroelectronics N.V.
H
H04L
inventional
Siwert Lennart Hans Lis-Marie Goran Lars-Ake Daniel Tomas Tomas Magnus Anders Harry Mikael Ye Gunnar
Hakansson Olsson Ohman Ljunggren Okvist Isaksson Bengtsson Stefansson Nordstrom Johansson Isaksson Tonvall Isaksson Wen Bahlenberg