Difference between revisions of "DAB modulation"
From OpenDigitalRadio
Jump to navigationJump to search (New page: The modulator takes the ETI stream and produce the complex baseband OFDM signal ready for upconvert at the desired radio frequency. ===Tools=== *CRC-DabMod DAB ...) |
|||
| (16 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | The modulator takes the ETI stream and produce the complex [[wikipedia:baseband|baseband]] OFDM signal ready for upconvert at the desired radio frequency. | + | The modulator takes the ETI stream and produce the complex [[wikipedia:baseband|baseband]] DAB OFDM signal ready for upconvert at the desired radio frequency. |
| − | == | + | ==ODR-DabMod Modulator== |
| − | *[[ | + | *[[ODR-DabMod]] DAB modulator from CRC |
| − | + | ==Transmission using USRP Hardware== | |
| − | *[[Band 3 baseband player]] Band 3 baseband player | + | With the current improvements on [[ODR-DabMod]], it is possible to directly use UHD to send data to the USRP, and do the digital filtering inside ODR-DabMod. See [[DAB hardware]] for more details. |
| + | |||
| + | |||
| + | ===VHF Band III baseband player (sender)=== | ||
| + | For crc-dabmod released by CRC, which did not yet contain an integrated UHD output, a baseband player is required to use the USRP Software Defined Radio platform. | ||
| + | The baseband player sends the stream to the SDR device, and defines additional settings like transmission frequency, DAC sample rate, gain and other parameters. | ||
| + | |||
| + | Recent versions of gnuradio and Ettus products with UHD: | ||
| + | *[[UHD Band 3 baseband player]] Graphical DAB VHF Band III baseband player for UHD driver (generic driver for Ettus USRP products) | ||
| + | *[[UHD simple baseband player]] Non-GUI DAB baseband player for UHD driver (generic driver for Ettus USRP products) | ||
| + | |||
| + | Deprecated gnuradio USRP1 with libusrp driver (for gnuradio version up to 3.4.2): | ||
| + | *[[Band 3 baseband player]] Graphical gnuradio DAB VHF Band III baseband player for USRP1. | ||
*[[CRC-Dwap.py]] original baseband player designed by CRC for USRP1 (using gnuradio 2.0) | *[[CRC-Dwap.py]] original baseband player designed by CRC for USRP1 (using gnuradio 2.0) | ||
| + | |||
| + | ==CRC-DabMod Modulator== | ||
| + | *[[CRC-DabMod_usage|CRC-DabMod]] is the original DAB modulator from CRC. Project has been stopped by CRC. It has been forked and development continues as [[ODR-DabMod]] | ||
Latest revision as of 21:48, 30 July 2014
The modulator takes the ETI stream and produce the complex baseband DAB OFDM signal ready for upconvert at the desired radio frequency.
ODR-DabMod Modulator
- ODR-DabMod DAB modulator from CRC
Transmission using USRP Hardware
With the current improvements on ODR-DabMod, it is possible to directly use UHD to send data to the USRP, and do the digital filtering inside ODR-DabMod. See DAB hardware for more details.
VHF Band III baseband player (sender)
For crc-dabmod released by CRC, which did not yet contain an integrated UHD output, a baseband player is required to use the USRP Software Defined Radio platform. The baseband player sends the stream to the SDR device, and defines additional settings like transmission frequency, DAC sample rate, gain and other parameters.
Recent versions of gnuradio and Ettus products with UHD:
- UHD Band 3 baseband player Graphical DAB VHF Band III baseband player for UHD driver (generic driver for Ettus USRP products)
- UHD simple baseband player Non-GUI DAB baseband player for UHD driver (generic driver for Ettus USRP products)
Deprecated gnuradio USRP1 with libusrp driver (for gnuradio version up to 3.4.2):
- Band 3 baseband player Graphical gnuradio DAB VHF Band III baseband player for USRP1.
- CRC-Dwap.py original baseband player designed by CRC for USRP1 (using gnuradio 2.0)
CRC-DabMod Modulator
- CRC-DabMod is the original DAB modulator from CRC. Project has been stopped by CRC. It has been forked and development continues as ODR-DabMod
