Transmitting apparatus and method, and receiving apparatus and method in multple antenna system
US8121212B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 4, 2006 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Respective codewords of quantization codebooks corresponding to a number of data streams are selected based on channel information estimated by a received training symbol. A stream mode is selected among stream modes to determine a modulation method applied to each data stream. The data stream is detected by using the codeword corresponding to the quantization codebook of the data stream corresponding to the selected stream mode as a precode matrix, and the detected data stream is modulated. In this case, a receiving apparatus performs a feedback operation so that indexes of the selected stream mode and the codeword used as the precode matrix may be transmitted to the transmitting apparatus. The transmitting apparatus selects the number of transmitted data streams and the modulation method based on the transmitted index of feedback streams by the feedback operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.