An Efficient Design of Code Division Multiple Access Encoding/Decoding Technique

Abstract

CDMA is the method to multiplex multiple codes together to transfer information over chip between
different devices on the facilitated environment. It is very famous due to its high through put and efficiency. The
communication over the chip is becoming a regular problem since on chip devices should be as small as possible
and they should consume less energy but practical it is odorous task. In this project we are implementing CDMA
approach to the system on chip. The proposed encoder and decoder will which are occupying less area than area
and it are very high speed due to the simple architecture. We are using modified orthogonal set of the Walsh and
SB schemes. The schemes are designed using Verilog HDL. The design description is synthesized in Xilinx
ISE14.3.In the transmitter module, source information from various senders are independently encoded with an
orthogonal code of a standard premise and these coded information are combined by a XOR operation. At that
point, the entireties of information can be transmitted to their goals through the on chip correspondence base. In
the collector module, a succession of chips is recovered by taking an AND operation between the entireties of
information what's more, the relating orthogonal code. After a basic aggregation of these chips, unique
information can be remade. We execute our encoding/decoding technique and apply it to a CDMA with a star
topology.