Digital intermediate frequency QAM modulator using parallel processing
Patent
·
OSTI ID:981822
- Livermore, CA
- San Ramon, CA
The digital Intermediate Frequency (IF) modulator applies to various modulation types and offers a simple and low cost method to implement a high-speed digital IF modulator using field programmable gate arrays (FPGAs). The architecture eliminates multipliers and sequential processing by storing the pre-computed modulated cosine and sine carriers in ROM look-up-tables (LUTs). The high-speed input data stream is parallel processed using the corresponding LUTs, which reduces the main processing speed, allowing the use of low cost FPGAs.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Number(s):
- 7,379,509
- Application Number:
- US Patent application 10/644,561
- OSTI ID:
- 981822
- Country of Publication:
- United States
- Language:
- English
FPGA implementation of multiplierless M-QAM modulator
|
journal | January 2002 |
Similar Records
GLAST Burst Monitor Signal Processing System
Digital Intermediate Frequency Receiver Module For Use In Airborne Sar Applications
An 8.8 ps RMS Resolution Time-To-Digital Converter Implemented in a 60 nm FPGA with Real-Time Temperature Correction
Journal Article
·
Thu Jul 12 00:00:00 EDT 2007
· AIP Conference Proceedings
·
OSTI ID:981822
+13 more
Digital Intermediate Frequency Receiver Module For Use In Airborne Sar Applications
Patent
·
Tue Mar 08 00:00:00 EST 2005
·
OSTI ID:981822
An 8.8 ps RMS Resolution Time-To-Digital Converter Implemented in a 60 nm FPGA with Real-Time Temperature Correction
Journal Article
·
Sat Apr 11 00:00:00 EDT 2020
· Sensors
·
OSTI ID:981822
+7 more