Method of operating a block transmission based communication apparatus
US8416874B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2009 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Nov 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03159
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A block of information is processed before transmission thereof in a block transmission based communication. This comprises inserting a cyclic prefix and a cyclic suffix into the block of information before applying a time reversal based prefilter prior to transmission to the data after cyclic prefix and cyclic suffix insertion, the prefilter being configured on the basis of knowledge of the condition of the channel over which communication is to be effected. Then, at the receiver, a removal operation is operable to remove the effect of cyclic prefix and suffix insertion, leaving a circulant shifted version of the original block. This can be decoded using a diagonal matrix containing frequency domain channel coefficients on its diagonal entries after FFT. For systems with more than two transmit antennas, this facilities the use of full rate OSTBC, regardless of whether real or complex signaling is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.