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With the rapid development of embedded and wireless technology, the combination of embedded system with wireless technology has gradually become a research hotspot. This paper proposes a data acquiring embedded system based on AD9361 (high speed ADC) and ZC706 (high performance FPGA embedded platform).The purpose of the proposed system in this paper is to capture wireless signal from bandwidth varies...
Following the synthesis and expansion of airborne devices' functions and the requirement of miniaturization of size, the traditional analog IF signal receiving system shows large size, high power consummation and low stability. It is difficult to satisfy the requirement of modern communications. This system applies software radio design thought and implements all digital IF signal processing and 485...
Digital down converter (DDC) is the one of the key technologies in the field of software define radio (SDA). Compared with traditional ASIC DDC devices, DDCs implemented by FPGA have more flexible frequency and phase characteristics and higher precision computation. The paper designed and implemented DDC with above advantages on Xilinx FPGA Virtex-5. Through analyzing the key points of DDC theory...
We propose in this paper, a timing analysis of dynamic partial reconfiguration (PR) applied to a NoC (network on chip) structure inside a FPGA. In the context of a SDR (software defined radio) example, PR is used to dynamically reconfigure a baseband processing block of a 4G telecommunication chain running in real-time (data rates up to 100 Mbps). The results presented show the validity of our methodology...
This paper presents the ANR project IDROMel, which aims at developing reconfigurable SDR (software defined radio) and cognitive radio (CR) equipments. IDROMel is a 3 years project that started in 2005 and finishes in 2009. The main objective of IDROMel is to define, develop and validate a powerful SDR and CR platform combining very last technology progresses. The platform includes software parts (reconfigurable...
Software defined radio (SDR) is gaining much attention in many application fields, e.g. satellite communication (SATCOM). In this paper, the requirements of SDR architecture for SATCOM application are discussed and a novel network on chip (NoC) architecture proposal are presented in order to achieve these requirements. Compared with several common NoC architectures, the proposed NoC can reduce the...
Todaypsilas advanced MILSATCOM terminals depend heavily on Field Programmable Gate Array (FPGA) devices to support the increased demands of above 2 GHz, high bandwidth high throughput (HBHT), high data rate (HDR) waveforms. One critical issue is that the delivery approach of FPGA-based waveforms is not standardized. However, the techniques developed by the Software Communications Architecture (SCA)...
This thesis introduces the design of multiphase decimation filter IP core in software radio receiver in detail. This soft-core could automatically generate Verilog-HDL code with optimized-structure according to input parameters. The application of this core can decrease the design time and cost, and improve reliability; it can also be combined with the dynamic reconfiguration FPGA technology to realize...
A small-size software defined cognitive radio equipment that is composed of a hardware platform and a software platform has been introduced. The hardware platform is composed of a multiband/tunable RF unit with multiple switching circuits, and the signal processing unit is composed of FPGA and CPU boards. The software platform is composed of several managers that manage spectrum sensing and reconfiguration...
A cognitive radio is the final point of software-defined radio platform evolution : a fully reconfigurable radio that changes its communication modules depending on network and/or user demands. His definition on reconfigurability is very broad and we only focus on the heterogeneous reconfigurable hardware platform for cognitive radio. software defined radio (SDR) basically refers to a set of techniques...
National Institute of Information and Communications Technology (NICT) has developed a software defined radio platform that consists of FPGA board, CPU board, and RF boards. On the platform, software packages for W-CDMA, IEEE802.11a/b, and digital terrestrial broadcasting have been developed. Each software package consists of physical layer, MAC/DLC layer, IP layer, and application layer part In this...
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