Low latency OFDM system
US9203679B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2013 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Nov 28, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2698
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A low latency transmitter and receiver for an OFDM system are disclosed. The low latency transmitter includes an FFT module and a baseband modulator. The FFT module computes IDFT of PSK constellation data symbols or QAM constellation data symbols. The baseband modulator performs complex modulation of the IDFT samples by multiplying these samples with 1 and −1 alternatively in time domain. The low latency receiver includes a baseband demodulator and another FFT module. The baseband demodulator performs complex demodulation of the received samples of OFDM symbols by multiplying the samples of OFDM symbols with 1 and −1 alternatively in time domain thereby obtaining baseband demodulated symbols. The FFT module of the receiver computes DFT of samples of the baseband demodulated symbols to obtain samples of the OFDM demodulated symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.