Removing bias in a pilot symbol error rate for receivers
US7522682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Apr 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and an apparatus for measuring a reception quality on a wireless communication link to a receiver by removing a bias in a plurality of received pilot symbols and obtaining a channel estimate for a channel, such as a wireless propagation channel, after substantially removing the bias. For a receiver, such as a rake receiver disposed in a base transceiver station, a bias removal module may extract a plurality of coefficients from a wireless propagation channel to remove a bias before a detector may receive the plurality of pilot symbols in the data stream to determine an error rate of the received pilot symbols where channel estimation is based on the received pilot symbols. In this manner, a systematic flaw in a link quality measurement based on an error rate of the received pilot symbols may be resolved for wireless communication systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.