Physical Layer Implementation of a class of
ZigBee Baseband Transceiver using FPGA

Abstract

ZigBee and IEEE 802.15.4 standard for wireless technology, developed in 2003 were designed for interconnection of data communication using low data rate, low power and low
complexity short range communication in a wireless personal area network (WPAN). Later in 2006, it was enhanced for market applicability to remove ambiguities in implementation
for low data rate and short range wireless networks with high battery life. This technology supports cost effective, low power, wireless network monitoring and control products based on open global standard. This thesis presents a FPGA implementation of Baseband physical layer for ZigBee. It
presents the designs, implementation, verification and validation.The ZigBee baseband transceiver proposed in this thesis is based on IEEE 802.15.4 where the transceiver uses OQPSK modulation. DS spread spectrum and half sine pulse
shaping is used for coding and baseband processing respectively. The transceiver is initially simulated in matlab software using Simulink and next it was simulated in verilog HDL by the mentor graphics modelsim simulator. Subsequently the baseband transceiver system was realized on Virtex 5 FPGA using ISE design environment. Further a new form of baseband transceiver was designed using PN sequence generated by Residue number system (RNS). The performance of the transceiver using RNS system was first analyzed through matlab simulation. Following this the transceiver was implemented on Virtex 5 FPGA in ISE design environment.