Adaptive space-time transmit diversity coding for MIMO systems
US7263132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0202
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for transmitting a stream of data symbols in a multiple-input/multiple-output (MIMO) wireless communications system including Nr transmitting antennas. The stream of data symbols is first demultiplexed into M sub-streams, where M=Nr/2. Then, space-time transmit diversity encoding is applied to each sub-stream to generate a pair of transmit signals. Power is allocated dynamically to each transmit signal of each pair of transmit signals according to a corresponding feedback signal received from a receiver of the transmit signal. The feedback signal including a ratio of magnitude sums of channel coefficients for channels used for the transmit signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.