Methods and apparatus for multiple-antenna communication of wireless signals with embedded synchronization/pilot sequences
US8379752B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0024
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments include methods for determining synchronization/pilot sequences (SPS) to be utilized in conjunction with transmissions by antennas of a multiple-antenna transmitter. The SPS include pilot signals that are positioned at subcarriers that are orthogonal in frequency with subcarriers at which pilot signals of other antennas are positioned. The pilot signals may be unevenly spaced across the in-band subcarriers. The multiple-antenna transmit system generates a plurality of wireless signals, each of which may include an SPS having synchronization information in a first plurality of in-band subcarriers and the pilot signals in a second plurality of in-band subcarriers. The wireless signals are simultaneously radiated over a wireless communication channel using a different antenna. A receiver receives channel-affected versions of the wireless signals, and produces a corrected signal by applying corrections to the received signal based on estimated channel perturbations within the received signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.