Determining timing information in a receiver
AssigneeMarvell International Ltd.
InventorsHongyuan Zhang, Zhiyu Yang
Life of this patent
Estimating the term…
Abstract
A correlation magnitude signal is divided into a plurality of samples at a sequence of intervals over a symbol time, where the correlation signal corresponds to a magnitude of a correlation of a signal received at a receiver device with a known sequence. A sample with a highest magnitude value for the symbol time is selected from the plurality of samples. A symbol-synchronization signal that corresponds to an interval of the sequence of intervals containing the sample with the highest magnitude value is provided to a rake receiver system.
Claims18
A method of determining timing information in a receiver, the method comprising:
- generating, with one or more integrated circuit devices, a plurality of correlator output signals based on a transmitted signal encoded using a known sequence;
- generating, with one or more integrated circuit devices, a combined signal based on the plurality of correlator output signals;
- generating, with one or more integrated circuit devices, a plurality of values corresponding to a subset of samples in the combined signal including, for each sample in the subset, combining the sample with previous samples at previous symbols times to filter the sample over two or more symbol times;
- and
- generating, with one or more integrated circuit devices, a timing information signal using the plurality of values.
An apparatus, comprising:
- a plurality of correlators configured to generate a plurality of correlator output signals, wherein each correlator output signal corresponds to a correlation of a known sequence with a respective received signal corresponding to a respective antenna in a plurality of antennas;
- a first circuit configured to generate a combined signal based on the plurality of correlator output signals;
- a second circuit configured to generate a plurality of values corresponding to a subset of samples in the combined signal including, for each sample in the subset, combining the sample with previous samples at previous symbols times to filter the sample over two or more symbol times;
- and
- a third circuit configured to generate a timing information signal using the plurality of values.
Dependencies are inferred from the claim text.