Flexible correlation and queueing in CDMA communication systems
US6788731B2 · kind B2 · utility
13Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Jul 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/709727
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A programmable correlator for a communication system includes an input queue coupled with an analog-to-digital converter (ADC). The input queue includes a random access memory (RAM) wherein sampled data streams from the ADC are written into the RAM. The input queue has two banks of memory of width 2M. A flexible complex correlator is operable on M samples. The correlator is coupled to read M complex samples out of 2M samples from the input queue. A pseudo-noise (PN) crossbar unit operates to rotate a generated PN code to match a rotation of the input queue data in the complex correlator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.