Low complexity high-speed communications transceiver

摘要

A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.

主权项

1. A transmission system, comprising:
a plurality of receivers, each of the plurality of receivers receiving signals from one of a plurality of transmission bands, at least one of the plurality of receivers comprising:
a down-converter that converts an input signal from the one of the plurality of transmission bands to a base band, the down-converter creating an in-phase signal and a quadrature signal, the in-phase signal being the input signal multiplied by a cosine function at the frequency of the one of the plurality of transmission bands and the quadrature signal being the input signal multiplied by a sine function at the frequency of the one of the plurality of transmission bands;a filter coupled to receive signals from the down-converter, the filter substantially filtering out signals not in the base band and including an in-phase filter filtering the in-phase signal and a quadrature filter filtering the quadrature signal;an analog-to-digital converter coupled to receive signals from the filter and generate digitized signals;an equalizer coupled to receive the digitized signals; anda trellis decoder coupled to receive signals from the equalizer and generate recreated data, the recreated data being substantially the same data transmitted by a corresponding transmitter, andan offset block coupled between the down-converter and the filter, the offset block offsetting the in-phase signal and the quadrature signal such that signals output from the analog-to-digital converter averages zero.