Method and apparatus to permit substantial cancellation of interference between a received first and second signal

Abstract From the Canadian patent

The present invention relates to method and apparatus for substantially reducing the effects of interference at a receiver between concurrently received first and second digital signals which use the same frequency spectrum. Interference between signals is effectively reduced by transmitting the first digital signal in an uncoded form while concurrently transmitting the second digital signal with both reduced capacity when compared with the first signal and in coded form using a forward error correcting code such as, for example a block, or convolutional code. At the receiver intercepting both digital signals, a suitable detection process is performed to decode the second signal and …