Kabushiki Kaisha Toshiba

Toshiba Corporation

Anthony Craig Dolwin

Michael Philip Fitton

Yuk Ching Chow

Mohamed Rafiq Ismail

Khurram Ali Rizvi

Spread spectrum receiver architectures and methods are described for reducing interference, particularly the interference observed at a user-end terminal in a W-CDMA 3G mobile communications system. Interpath interference which arises due to non-zero cross and auto correlation of more than one spreading code is suppressed by estimating a transmitted signal stream, or a plurality of such signal streams in the case of a plurality of multipath components, respreading this estimated signal and subtracting non-orthogonal interference contributions from a received signal. The techniques provide an improved bit error rate or equivalently, enhanced capacity for a digital mobile communications network.

Receiver processing systems

The present invention relates to processing apparatus utilising dynamic scaling of voltage (DVS), and in particular although not exclusively to a controller for such apparatus. The invention is especially applicable to software defined radio (SDR), but is not so limited and may be applied to other re-configurable electronic systems. The present invention provides a controller for a processing apparatus having a plurality of processing resources, at least some of said resources having controllable supply voltage and/or frequency; the controller comprising: means for scheduling operations on said resources, at least some of said operations having a predetermined deadline by which the operation must be performed; means for determining a voltage and/or frequency profile for a said operation having a said deadline; and means for instructing the resources to perform said operations according to said schedule and said profile.

Controller for processing apparatus

A digital mobile phone network infrastructure includes a plurality of radio base stations in communication with a plurality of mobile communications devices over a radio interface. In a method according to the invention packetized streamed media data is buffered within the network infrastructure and this data is then sent to a mobile communications device when traffic across the radio interface is low. The data may be transmitted at a lower than usual quality of service. Preferably the mobile communications device buffers the streamed data until reception is complete before the data stream is played to a user. Aspects of the invention also include a mobile communications device and a streamed media data controller for implementing the method. The method allows more efficient use of a network capacity and in particular allows the provision of high quality multimedia bulletins to mobile phone users at times of peak loading.

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Bristol, United Kingdom

Anthony Craig Dolwin