SYSC5403 - Report

SYSC5403 - Report - Carleton University Systems and...

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Carleton University Systems and Computer Engineering Department SYSC5403: Network Access Techniques Term Paper Comparison between OFDM and CDMA: The difference in performance and complexity of the two systems By: Amar Farouk Merah 100828842 2 nd of December, 2010
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Student Name: Amar Farouk Merah Student ID: 100828842 Comparison between OFDM and CDMA: The difference in complexity and performance of the two systems Abstract Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA) are two very well known and competing air interface technologies. These two technologies are of the most developing ones in modern mobile communications and for the past few years, they have been competing in order to dominate the mobile world. The main two issues that are usually the determining points of which modulation techniques are to be used include the complexity and performance of such systems. A system that has a better performance and has a lower complexity is usually preferred over one that is lower performing and may be more complex to implement and use. OFDM has been used by operators in order to handle larger amounts of bandwidth that CDMA cannot accommodate for, whereas CDMA has been proven to be sufficient and more cost-effective for certain operators’ voice and broadband requirements. It is commonly believed that OFDM is a better performing system than CDMA since it achieves better Bit Error Rate (BER) and less fading effects than CDMA. Also, OFDM has also been known to be a less complex system than CDMA, yet CDMA is still being used in today’s modern mobile communications systems. This paper will present a comparison between OFDM and CDMA in terms of performance and complexity.
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INTRODUCTION The cellular and telecommunication industry has grown dramatically over the past few years, offering services such as basic telephony, radio, computer, Internet and digital wireless telecommunications. Many air interfaces and network access technologies have been implemented in these industries, whether it be through wireless or wired technologies, and many of these have either failed and been forgotten or have evolved into better performing, less complicated and cheaper-to-implement access technologies. Third generation (3G) IMT-2000 technologies have entered the telecommunication industry since the beginning of the 21 st century. Since then, wireless operators have been able to accommodate for high-quality voice services and broadband Internet and multimedia services. Using code-division multiple access (CDMA), these services allowed multiple users to access these services offered by operators. 7 years from implementing the first 3G network, which was based on CDMA2000®, hundreds of operators have launched CDMA2000 and WCDMA systems, and have increased their customer base to tremendous numbers due to the services now available with the
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SYSC5403 - Report - Carleton University Systems and...

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