Channel estimation for block transmissions over time- and frequency-selective wireless fading channels
US7590188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2004 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Jul 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are described for channel estimation of block transmissions over time- and frequency-selective wireless fading channels. A wireless transmitter forms blocks of symbols that include at least two blocks of training symbols separated by at least one information-bearing symbol. Each block of training symbols comprises a first block of zero symbols and a second block of zero symbols separated by at least one training symbol. Each block of training symbols is equally long and equally spaced between information-bearing symbols. The training and information-bearing symbols are transmitted with equal power, respectively. A wireless receiver receives a wireless transmission signal formed according to the blocks of symbols and forms an estimate of a wireless communication channel based on the training symbols within the received signal. The structure and selected parameters of the symbols enabling symbol detection and channel estimation to be decoupled at the receiver while maximizing the average capacity of the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.