Abstract: Fast network scanning is enabled by an accessory for a mobile phone. The accessory captures a wideband spectrum via a software defined radio that is independent of the mobile phone itself. The accessory consumes less than 3 W while verifying multiple base stations, of various standards, in an area. To achieve such a low power consumption, the accessory dynamically controls frequency, gain and bandwidth according to a prioritization of processing threads and a target scanning speed.

Abstract: A method in a mobile wireless communication transmitter, the method including obtaining (200) transmitter power related information, for example, transmitter headroom information and transmitter inter-modulation distortion information, and requesting (210) a change in transmitter channel configuration, for example, frame size, based on the transmitter power related information obtained. In another embodiment, the channel configuration is changed based on whether the transmitter is in soft handoff.

Abstract: A method in a radio transmitter, the method including generating indices, for example, with an index generator (132), encoding information by selecting different subsets of correlation-separable signals, for example, by multiplexing orthogonal spreading codes with indices input to a multiplexor (142), encoding information by modulating at least some of the indices with a modulator (134), and combining the information encoded by selecting the different subsets of correlation-separable signals with the information encoded by modulating at least some of the indices.