Patent ID: 7532683
Filing Date: 2009-05-12
Classification: H04L

Abstract:
1. A receiver comprising: a down convener for providing a received signal; and a demodulator having at least two demodulation modes for demodulating the received signal, wherein one demodulation mode is hierarchical demodulation and another demodulation mode is layered demodulation, and wherein the demodulator comprises an upper layer demodulator for processing the received signal to provide a demodulated upper layer signal; an upper layer decoder for decoding the demodulated upper layer signal to provide a decoded upper layer signal; an upper layer remodulator/reencoder responsive to the decoded upper layer signal for providing a reconstructed modulated upper layer signal; a combiner for combining the received signal with the reconstructed modulated upper layer signal such that an upper layer signal component of the received signal is substantially reduced therefrom to provide a received lower layer signal; a lower layer demodulator for processing the received lower layer signal to provide a demodulated lower layer signal; a selector for providing a lower layer signal derived from either the demodulated lower layer signal or the demodulated upper layer signal; and a lower layer decoder for decoding the lower layer signal to provide a decoded lower layer signal.