Patent ID: 7787572

Claim:
A multi-mode receiver, comprising: a channel decomposition module configured for performing a decomposition of a communication channel into a plurality of subchannels; a baseband receiver comprising an upstream baseband processor and a downstream baseband processor; and an interference canceller coupled between the upstream baseband processor and the downstream baseband processor; wherein at least one of the channel decomposition module, the baseband receiver, and the interference cancellation system is configurable for processing multi-mode signals; an interference selector coupled to the downstream baseband processor and configured for selecting subchannels that are likely to contribute interference to at least one signal of interest, for producing at least one selected interference symbol; a synthesizer configured to synthesize a synthesized interference signal from the at least one selected interference symbol; a channel emulator configured to produce an estimated interference signal from the synthesized interference signal; a second upstream baseband processor coupled to the channel emulator and configured for producing an estimated received interference signal from the estimated interference signal; and a canceller configured for orthogonally or obliquely projecting a signal output from the baseband receiver onto a subspace that is orthogonal or oblique to a subspace of the estimated received interference signal.