Title :
Convolutional spectral shaping
Author :
Kim, Daeyoung ; Eyuboglu, M. Vedat
Author_Institution :
Internet & Network Group, Motorola Inc., Mansfield, MA, USA
Abstract :
A new spectral shaping technique Convolutional Spectral Shaping (CSS), is introduced. In CSS, equivalence classes of possible sign bit sequences are represented by a coset of a convolutional code and a search through the trellis of the code is used to pick a sequence from the selected coset to approximate a target spectral shape for transmission. Simulation results are included to illustrate the performance of CSS. A version of CSS has recently been adopted by the International Telecommunication Union (ITU) in the Pulse Code Modulation (PCM) modem standard V.90
Keywords :
convolution; convolutional codes; equivalence classes; modems; pulse code modulation; telecommunication standards; PCM modem standard V.90; convolutional code; convolutional spectral shaping; coset; equivalence classes; sequence; sign bit sequences; Cascading style sheets; Convolution; Convolutional codes; Filters; Modems; Modulation coding; Phase change materials; Pulse modulation; Spectral shape; Telecommunication standards;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.767976
