Correlator and demodulation device including the correlator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 15, 2013
Grant Date -
Feb 23, 2012
app pub date -
Aug 15, 2011
filing date -
Aug 18, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The Present invention provides a correlator including, a read-out processing circuit that reads out an OFDM signal in RAM as 2n−1 number of delay OFDM signals that are increased and delayed sequentially with their adjusted read-out timings. Complex conjugate circuits that outputs complex conjugates of the inputted nth to 2n−1th delay OFDM signals. Complex arithmetic circuits that perform complex multiplication to inputted original OFDM signal, the first to n−1th delay OFDM signals, and the output signals from the complex conjugate circuits. Moving average processing circuits take the moving average of the GI length, gain adjustment circuits adjust the gains, an adder circuit adds the outputs of the adjustment circuits, and a filter circuit smoothes the addition result. A control circuit variably controls the delay of the delay OFDM signals, the gains of the gain adjustment circuits, and the band characteristic of the filter circuit.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H04L Class
- 0 % this patent is cited more than
- 12 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 15, 2025 |
