Mediatek Corporation

Analog Devices,inc.

Ubinetics Limited

Timothy Fisher-Jeffes

Aiguo Yan

Deepak Mathew

Eric Aardoom

Krishnan Vishwanathan

Lidwine Martinot

Jason Paul Woodard

A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data, an intermediate frame buffer that receives the de-mapped physical channel data, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data. The back end processor may include a third stage, including a scaling circuit to scale the encoded transport channel data, a decoder to decode the scaled transport channel data, a CRC checker and an output buffer.

Interface between chip rate processing and bit rate processing in wireless downlink receiver

Re-quantization in downlink receiver bit rate processor

Receiver-side apparatus for a transmission link, the link using different transport formats for blocks of data, and using convolutional coding with additional error detection code information, for transmitting the blocks to the receiver side, the apparatus having a decoder for performing a trellis decode and tracebacks of one of the received coded blocks, to produce decoded data candidates, an error detection element for carrying out one or more speculative error detections on the candidates, assuming part of each candidate is the additional error detection code, and part is the block of data, and a format detector for determining a transport format based on a result of the speculative error detections, the apparatus being arranged to determine a probability of a candidate being valid, and prioritize carrying out the tracebacks or the speculative error detections according to the probabilities.

Blind transport format detection for transmission link

A new output mask for a m-sequence generator is produced by modulo-2 summing a number of intermediate masks. The intermediate masks are produced by shifting a shift template by amounts corresponding to offsets of set bits in an existing output mask. If an intermediate mask contains set bits beyond its portion corresponding to the new output mask, then they are wrapped back.

Apparatus and method for generating a code mask

A stream of recursive systematic convolutional codes Pis generated by XORing each bit of an input bit stream Iwith a predetermined bit of the content of a cyclic shift element (). The content of the shift element () is updated by adder () under the control of the input bit stream I.

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Cambridge, United Kingdom

Timothy Fisher-Jeffes