Radio communication system
US7251460B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2002 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Jul 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7117
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio communication system comprises a communication channel between a transmitter (106) comprising a plurality of antennas (108) and a receiver (112) comprising at least one antenna. The communication channel is wideband and comprises a plurality of paths, and the transmitter comprises means for splitting data for transmission into a plurality of sub-streams. The receiver comprises fewer antennas than the number of transmitted sub-streams and sampling means for determining at least as many substantially uncorrelated received signal samples as the number of sub-streams.In one embodiment, transmissions on the channel employ code division techniques and the sampling means comprises a Rake receiver. In another embodiment a maximum likelihood technique is used to generate sufficient samples. By means of the present invention a receiver for use in a Multiple Input Multiple Output (MIMO) communication system may comprise fewer antennas than the number of sub-streams, thereby enabling smaller terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.