Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
Multi-carrier transmission systems
A multi-carrier transmission system has a plurality of transceivers, each having a receiver and a transmitter. Data is transmitted between the transceivers by modulating the data onto a multiplicity of carrier waves in the form of multi-bit symbols, wherein each carrier wave constitutes a channel, and wherein the number of bits per symbol (the bit loading), varies between channels and, within a channel, with time, so that each channel has associated therewith a bit loading parameter. In operation, the multi-carrier system is adapted to synchronously update, at the transceivers, the bit loading parameters associated with each channel by transmission of data over a control channel, in that the control channel is established, at system start-up, on a predetermined one of the multiplicity of carrier waves whose identity is known to the transceivers, and in that the control channel is, after start-up, changed from the predetermined channel to a further channel, selected by the first transceiver on the basis of channel characteristics.
STMicroelectronics N.V.
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Hans Goran Daniel Lars-Ake Magnus Ye Siwert Tomas Tomas Lis-Marie Gunnar Mikael Anders Harry Lennart
Ohman Okvist Bengtsson Isaksson Johansson Wen Hakansson Stefansson Nordstrom Ljunggren Bahlenberg Isaksson Isaksson Tonvall Olsson