Passive ionospheric radar builds with USRP N210

PAPR Reduction and BER Performance for WiMAX on USRP N210 using GNU Radio

The test bed utilizes an open source GNU Radio software environment and the Ettus Research Universal Software Radio Peripheral (USRP N210) for performing SDR functionality, which reduces the cost and complexity of the system. This paper focuses on the implementation of an OFDM based WiMAX physical layer on a specific SDR, the GNU Software Radio (GSR). However, a major problem involved with OFDM...

Concatenated Coding in Ofdm for Wimax Using Usrp N210 and Gnu Radio

A software Defined Radio (SDR) device employs a reconfigurable hardware (Universal Software Radio Peripheral-USRP) that may be programmed over-the-air or software (GNU Radio) to function under different Wireless standards. This paper analyzes the effect of various parameters such as channel noise, frequency offset, timing offset, timing beta, FLL (Frequency Lock Loop) bandwidth, Costas loop (ph...

Spectrum Sensing with USRP-E110

Spectrum sensing is one of the key topics towards the implementation of future wireless services like SuperWiFi. This new wireless proposal aims at using the freed spectrum resulting from the analog-todigital transition of TV channels for wireless data transmission (UHF TV White Spaces). The benefits range from better building penetration to longer distances when compared to the set of IEEE 802...

Region-Enhanced Passive Radar Imaging

We adapt and apply a recently-developed region-enhanced synthetic aperture radar (SAR) image reconstruction technique to the problem of passive radar imaging. One goal in passive radar imaging is to form images of aircraft using signals transmitted by commercial radio and television stations that are reflected from the objects of interest. This involves reconstructing an image from sparse sampl...

Incoherent Scatter Radar — Spectral Signal Model and Ionospheric Applications