Signal discriminator for a spread spectrum system
US7027485B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2001 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Jan 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70701
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a method of discriminating a received spread spectrum signal among a number of received spread spectrum signals that are transmitted over a transmission channel, the received spread spectrum signal is despread, thereby using a locally generated pseudo noise sequence with a given phase offset. The despread received spread spectrum signal is quantized so as to obtain a probability mass function estimate of the despread received spread spectrum signal. A difference is determined between the probability mass function estimate and a true probability mass function that corresponds to a transmitted spread spectrum signal before transmission over the transmission channel. The difference is accumulated over a given number of symbols so as to obtain a statistic of the received spread spectrum signal. If the statistic fails a test against a given threshold, the received spread spectrum signal is rejected. Otherwise, the statistic is accepted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.