Patent ID: 7106802
Filing Date: 2006-09-12
Classification: H04L

Abstract:
1. Apparatus for a communication system having a sending station for sending data upon a communication channel, the communication channel susceptible to fading, said apparatus for the sending station for converting the data into a form to facilitate communication thereof upon the communication channel, said apparatus comprising: a multi-dimensional trellis-coded modulator having a signal constellation partitioned into subsets of increasing minimum squared distances, and coupled to receive data to be sent by the sending station, said multi-dimensional trellis-coded modulator for convolutionally encoding the data according to a rule of correspondence comprising defining intrasubset transitions to correspond to longer-length transitions, and defining intersubset transitions to correspond to shorter length transitions, and for mapping the data, once encoded, to the signal constellation, and forming N-dimensional, trellis-encoded sequences therefrom, the N-dimensional, trellis-encoded sequences of dimensional values greater than two; a first transmit antenna and at least a second transmit antenna coupled to said multi-dimensional, trellis-coded modulator, a first N-dimensional sequence of the N-dimensional, trellis-encoded sequences transduced by said first transmit antenna and a second N-dimensional sequence of the N-dimensional, trellis-encoded sequences transduced by said second transmit antenna, the first and second N-dimensional sequences exhibiting orthogonal transmit diversity.