Patent ID: 6901115

Claim:
Apparatus for a sending station of a communication system at which send data is sent upon a communication susceptible to fading, the send data formed of data symbols, each data symbol having a real coordinate and an imaginary coordinate, said apparatus for the sending station for converting the send data into a form to facilitate communication thereof upon the communication channel, said apparatus comprising: a coordinate interleaver adapted to receive the data symbols, said coordinate interleaver selectably for interleaving coordinates of the data symbols according to a selected interleaving scheme to form interleaved symbols, such that for a selected data symbol, a real coordinate thereof is interleaved with a real coordinate of a first data symbol, and an imaginary coordinate is interleaved with an imaginary coordinate of an other than said first data symbol; and a controller coupled to said coordinate interleaver and adapted to receive indications of a channel condition of the communication channel, said controller selectably for causing operation of said coordinate interleaver, said controller for causing the operation of said coordinate interleaver when the channel condition is poorer than a selected threshold.