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US 7,583,722 B2Granted
Scaling using gain factors for use in data detection
AssigneeInterDigital Technology Corporation
InventorsJung-Lin Pan, Younglok Kim, Donald M. Grieco
Life of this patent
Estimating the term…
Abstract
Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal.
Claims7
A user equipment (UE) comprising:
- an antenna configured to receive a vector comprising a plurality of communications, the communications received in a shared spectrum;
- a channel estimation device configured to estimate a channel response of the received vector, said channel response including a channel response matrix and a noise variance;
- and
- a data estimation device configured to receive a scaled input, including one of a scaled version of a noise variance or a scaled version of a channel response, said scaled input scaled by a factor derived from at least one gain factor of the received communications, and to use the channel response and the received vector to detect data of the plurality of communications.
1 more element
Dependencies are inferred from the claim text.