Scaling using gain factors for use in data detection
AssigneeInterDigital Technology Corporation
InventorsJung-Lin Pan, Younglok Kim, Donald 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.
Claims17
A circuit for estimating data from a received vector comprising a plurality of communications, the circuit comprising:
- a channel estimation device for estimating a channel response of the received vector;
- and
- a data estimation device for receiving a scaled input, the scaled input scaled by a factor derived from at least one gain factor of the plurality of communications, the data estimation device using the channel response and the received vector to detect data of the plurality of communications.
A method for estimating data from a received vector comprising a plurality of communications, the method comprising:
- converting a received wireless signal to a baseband signal;
- sampling the baseband signal to produce a received vector;
- estimating channel responses for the received communications;
- estimating the noise variance;
- scaling the noise variance by a scaling factor;
- processing samples using the estimated channel responses and the scaled noise variances to produce a spread data vector;
- and
- despreading the spread data vector to recover the data of the received wireless signal.
Dependencies are inferred from the claim text.