Equaliser for digital communications systems and method of equalisation
US7254171B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 2001 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Aug 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03605
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Equalisation of a communication channel is achieved through use of a Wiener filter frequency response mechanism that operates to transform at least a portion of a data stream generated from a plurality of space time coded (STC) symbol streams received from a plurality of transmit antenna elements into a packet spectrum. A training sequence for a channel through which the symbol streams have been sent is also transformed to a channel impulse response spectrum in order to assess the channel impulse response for the channel. The packet spectrum is equalised with the channel impulse response spectrum to produce an equalised packet spectrum in the transform domain. This is then converted into a time domain equalised data stream for recovery of originally transmitted information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.