Channel sounding for a spread-spectrum signal
US6711204B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jun 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/2628
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improvement to a spread-spectrum code-division-multiple-access system, using a channel sounding signal from a base station (BS) to provide initial transmitter power levels for remote stations (RS). The base station transmits BS-spread-spectrum signals at a first frequency and receives RS-spread-spectrum signals, which are transmitted by the remote stations at the second frequency. The base station transmits a BS-channel-sounding signal at the same carrier frequency being used by the remote stations. The bandwidth of the BS-channel-sounding signal is much less than the bandwidth of the BS-channel-spread-spectrum signal. Each remote station tracks the BS-channel-sounding signal, for adjusting the initial RS-power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.