Mstar Semiconductor, Inc.

Mstar Software R&d (shenzhen) Ltd.

Mstar France Sas

Mstar Software R&d, Ltd.

Mark B Murphy

Cyril Valadon

Richard Anthony Lane

Francesc Boixadera

Martin Geoffrey Leach

Carlo Pachetti

Craig Edward Burnet

Mong Suan Yee

Mong S Yee

Techniques are provided herein for digital data-aided frequency offset estimation offering better performance and increased accuracy over existing solutions. These new techniques also allow a trade-off between complexity and accuracy to be performed. The embodiments of the techniques for frequency offset estimation can be used for correction in both feedback and feed-forward control.

Digital data-aided frequency offset estimation

Techniques are provided for decoding tail-biting convolutional codes by using information within the received data stream that traditionally has not been used or been available to the convolutional decoder, e.g., cyclic redundancy check (CRC) and bit information known by both the transmitter and receiver. Further, a single parallel trace-back is used that reduces implementation complexity. In addition, the least reliable decisions made during forward processing may be reversed in order to generate additional possible codeword candidates. These techniques can be used to reduce false detection rates (FDRs) and/or detection error rates (DERs).

Tail-biting convolutional decoder and decoding method

Techniques are provided for a demodulation and decoding method and apparatus for a given user equipment device to receive a one or more Orthogonal Frequency Division Multiplex (OFDM) symbols over a control channel, where the OFDM symbols comprise a plurality of resource element groups distributed in time and frequency that are combined to form control channel elements. Those resource element groups that form specific control channel elements for the user equipment device and those resource element groups that form common control channel elements for one or more user equipment devices including the given user equipment device are identified. The resource element groups that form the specific control channel elements and the resource element groups that form the common control channel elements are demodulated to generate encoded control messages comprising one or more control channel elements.

Control channel demodulating and decoding method and communication apparatus using the same

A receiver for acquiring a signal through a propagation channel, the receiver comprising channel estimating means () for producing stream of CIR estimates for the channel, a plurality of doppler filtering means () for filtering the CIR stream in parallel and selecting means () for selecting the output of one of the doppler filtering means for use in recovering said signal.

Refinement of channel estimation with a bank of filters

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Cambride, United Kingdom

Mark B Murphy