Manifold assisted channel estimation and demodulation for CDMA systems in fast fading environments
US6501747B1 · kind B1 · utility
33Cited by
5References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1999 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | May 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0617
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Known antenna array manifold information is exploited to provide for fast and accurate channel estimation and demodulation on both the forward and reverse links, thereby increasing capacity in PCS and cellular CDMA networks that use adaptive antenna arrays. On the reverse link, an “extended” array manifold is used to assist the demodulator in maintaining a dynamic estimate of the spatial signature to use for beamforming and coherent demodulation. On the forward link, channel estimation is performed in the handset to provide a robust solution for beamforming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.