Virtual multi-antenna method for OFDM system and OFDM-based cellular system
US7848218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2006 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03605
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided are a virtual multi-antenna method for an orthogonal frequency division multiplexing (OFDM) system and an OFDM-based cellular system. The virtual multi-antenna method includes grouping sub-carriers in a frequency domain of an OFDM symbol and generating at least one group including G sub-carriers; and regarding the G sub-carriers included in the at least one group as multiple channels used in a multi-antenna technique and virtually applying the multi-antenna technique to the transmission and reception of the OFDM symbol. The virtual multi-antenna method can effectively reduce an interference signal and obtain the effects of a spatial division multiple access (SDMA) technique without physically using multiple antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.