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COMPACT IMPLEMENTATION OF DSSS WAVEFORM USING XILINX ZYNQ SOC AND AD9361 TRANSCEIVER
Sharvani Gadgil, Atul Pawar, C D Naidu, M Haritha

Published in: International Journal of Current Engineering And Scientific Research ( IJCESR)
Volume- 4, Issue-9, pp.39-43, Sep 2017
DPI :-> 16.10046.IJCESR.2017.V4I9.3943.1929



Abstract
Direct-Sequence Spread-Spectrum (DS-SS) is a widely used technique for secured wireless data communication today. The DS-SS technique is used in 2G (IS-95) and 3G (CDMA-2000, WCDMA) cellular mobile communication systems. Further, the IEEE802.11 also use DS-SS signal for wireless LAN. The DS-SS is widely used because of its features like providing secured communication by low probability of interference and detection (LPI/LPD) capability, multiple access and selective availability provided by (CDMA), better anti-jam strength achieved by using higher length pseudo-random noise (PN) sequence. The main objective of project activity is implementation of DS-SS signal with latest ARM enabled embedded FPGA (Xilinx-Zynq) and state of art Analog device’s wideband transceiver AD9361. The implementation work includes generation of Gold code using ARM based ‘C’ program and FPGA based Verilog HDL. This is realized in Xilinx-Zynq based system on chip (SoC) available on Zedboard using latest version of Xilinx EDK software that includes Xilinx Platform Studio (XPS) and Xilinx SDK. The embedded resources such as timers, UARTs, GPIOs and Gigabit Ethernet are utilized for DS-SS waveform generation. Various signals required for spreading and code generation are generated and analyzed on spectrum analyzer and an oscilloscope. The modulation is carried out in 2.4 GHz ISM frequency band. The various features of AD9361 transceiver IC are explored. The signal properties are tested on spectrum analyzer.

Key-Words / Index Term
DS-SS, CDMA, Gold code, SOC

How to cite this article
Sharvani Gadgil, Atul Pawar, C D Naidu, M Haritha , “COMPACT IMPLEMENTATION OF DSSS WAVEFORM USING XILINX ZYNQ SOC AND AD9361 TRANSCEIVER”, International Journal of Current Engineering And Scientific Research ( IJCESR), 4, Issue-9, pp.39-43, Sep 2017. DPI:16.10046.IJCESR.V4.I9.1929