Processing for improved performance and reduced pilot
US6516022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jan 11, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is a user equipment for carrier offset recovery during reception of a communication signal over an air interface using a plurality of channels in a pilot signal. The user equipment comprises an adaptive match filter for producing a filtered signal using a weighting signal, a rake receiver for producing a filter weighting signal, and a means for defining the filter weighting signal with a correction signal. A channel despreader is also included in the user equipment for despreading the filtered signal using a pseudo-noise signal for a selected channel to produce a despread channel signal of the selected channel. A pilot channel despreader is coupled to the adaptive match filter output for despreading the filter signal using a pseudo-noise signal generated for the pilot channel, producing a despread pilot signal of the pilot channel. A hard decision processor, associated with a complex conjugate processor, is also included in the user equipment for producing the correction signal. A phase lock loop, which uses the despread pilot signal, produces a phase correction signal, which is applied to produce phase corrected channel signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.