GSM voice evolution using orthogonal subchannels

  title={GSM voice evolution using orthogonal subchannels},
  author={Rafael Cauduro Dias de Paiva and Robson D. Vieira and Renato F. Iida and Fernando M. L. Tavares and Mikko S{\"a}ily and Jari Hulkkonen and Rauli J{\"a}rvel{\"a} and Kari Niemela},
  journal={IEEE Communications Magazine},
The explosive growth of mobile communications, and the overly crowded and expensive spectrum have pushed both system engineers and operators to make their systems as spectrally efficient as possible in order to accommodate the increasing traffic demand. This article is a tutorial introduction to the orthogonal subchannel (OSC) technique. OSC was adopted to improve the capacity of the GSM/EDGE radio access network GERAN, and it is a new concept in which two users can simultaneously share the… CONTINUE READING