Patent ID: 8089946
Filing Date: 2012-01-03
Classification: H04J,H04L,H04W

Abstract:
1. A modem which enables efficient use of bandwidth in a multiuser wireless network including a plurality of modems in the presence of interference and noise, the modem comprising: a multiuser detection (MUD) module configured to simultaneously demodulate and recover K wirelessly transmitted signals using co-channel demodulation; a data formatting module operatively coupled to the multiuser detection module, and configured to produce network data packets for at least one of the K recovered signals; a control processor operatively coupled to the formatting module, and configured to detect with which protocol mode the at least one of the K recovered signals was transmitted, and to enable a corresponding transmission mode including one of a legacy protocol mode and a bandwidth efficient aggressive access protocol mode that exploits co-channel demodulation capabilities of the modem, wherein the signals of the one of a legacy protocol mode can be selected from the group consisting of low data rate BPSK, QPSK, GMSK and OAM; and a demultiplexer operatively coupled to the data formatting module and the control processor, and configured to select one of the recovered K wirelessly transmitted signals as a target signal intended for a user associated with the modem, where the selection is based on a control input from the control processor, wherein the data formatting module supports multiple types of format modes, and the control processor is configured to select a network data packet formatting mode in which the data formatting operates.