Receiver and method performing adaptive overlap and add function in multi band orthogonal frequency division multiplexing scheme
US8050348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2007 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Nov 26, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03522
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver performing an adaptive overlap and add (OLA) function in a multi band orthogonal frequency division multiplexing (OFDM) scheme and a method using the receiver. The receiver performing the OLA function in the multi band OFDM includes a channel estimator to estimate a delay spread from a digital input signal; a signal-to-noise ratio (SNR) estimator to estimate an SNR from the digital input signal; and an overlap and add (OLA) module to determine an OLA length based on the estimated delay spread and the estimated SNR and to perform an OLA according to the determined OLA length, wherein the OLA module adds, to header samples of an OFDM symbol, tail samples corresponding to the estimated delay spread of the OFDM symbol corresponding to the digital input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.