Receiver device for code division multiplex communication system
US5602832A · kind A · utility
18Cited by
8References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1994 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Sep 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/043
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a CDM (code division multiplex) communications system a base station transmits a plurality of data signals on a common channel. Each data signal is provided with a spreading sequence, e.g. a Gold code, each sequence being allocated to a user of that channel. Each receiver incorporates a channel estimator for determining the channel impulse response (CIR) and means for convolving the CIR estimate with the corresponding user code. This is then correlated with the received signal to recover the received data. The arrangement allows an increased number of users to share a common channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.