International Journal of Scientific & Engineering Research, Volume 4, Issue 11, November-2013 1531 ISSN 2229-5518 IJSER © 2013 http://www.ijser.org Simulator-based Design of WCDMA Wireless Cellular Communication System Using Efficient Method Simon W. Pallam, Visa M. Ibrahim, Matthew Luka Abstract—The design of a third generation (3G) Wideband Code Division Multiple Access (WCDMA) wireless cellular communication system needs a higher design and simulation scheme that will guarantee the system scalability and quality of service due to rapid growth in the number of wireless communication users around the globe. Some previous wireless communication systems, especially the second generation (2G) wireless cellular sys- tems, were designed based on Traditional scheme of simulation. The 2G wireless communication systems had limited performance and quality of ser- vice as compared to the 3G wireless communication systems. In this work, a newer simulation scheme called the Efficient Scheme of modeling will be used to develop a 3G multi-user WCDMA wireless cellular communication system that is scalable. The Efficient scheme of design and simulation will be investigated and compared with the Traditional method in order to ascertain which one is better for the design of the 3G WCDMA wireless communica- tion system. MATLAB simulation software will be used due to its availability, cost effectiveness and interactive features. The Physical layer of the 3G multi-user WCDMA wireless communication link will be developed using SIMULINK functions while the simulation scripts will be written using MATLAB-based S-functions. Keywords – WCDMA Wireless Cellular Communication System, Efficient method ——————————  —————————— 1. INTRODUCTION he world’s demand for wireless cellular telecommunica- tion systems is growing at a faster rate than for wired-line telephone network as more people around the world are sub- scribing to wireless communication systems (WCS) [1]. The 3G wireless systems are required to have voice services of wire line quality, and provide high bit rate data services of up to 2Mbits/s depending on the radio environment. At the same time, they are to operate reliably in different types of environments: macro, micro, and pico; urban, subur- ban, and rural; indoor and outdoor. The strict requirements of the 3G on systems and the complexity of the new standards warrant improved methodologies that result in optimized im- plementations for their given applications. The WCDMA End-to-End Physical Layer models part of the frequency divi- sion duplex (FDD) downlink physical layer of the 3G wireless communication system known as wideband code division multiple access (WCDMA). ———————————————— The air interface spreads encoded user data at a relatively low rate over a wide bandwidth (5 MHz), using a sequence of pseudorandom units called chips at a very high rate (3.84 MHz). By assigning a unique code to each user, the receiver, which has knowledge of the code of the intended user, can successfully separate the desired signal from the received waveform. Code Division Multiple Access, which is one of the standard radio access schemes, is called spread spectrum technique be- cause it assigns unique codes to each communication in order to differentiate it from others in the same spectrum. In a world of finite spectrum resources, CDMA enables many more peo- ple to share the airwaves at the same time than do Time divi- sion multiple access (TDMA) and frequency division multiple access (FDMA) technologies. 3G wireless data services and applications such as wireless email, web, digital picture, Glob- al Positioning System (GPS) applications, video and audio streaming, TV broadcasting and wireless networks have much to offer in terms of capacity enhancement and performance. This is why CDMA technology forms the platform on which 2G and 3G systems advanced services are built and are very much popular in cellular communications [2]. The simulation of Wireless communication system allows the evaluation of different variables in the system, such as the properties of the channel, which are affected by environmental factors in the design [3], [4], [5]. One of the most challenging parts of the design of wireless Cellular communication sys- tems is the design of the baseband physical layer. The base- band physical layer algorithms are designed to establish and maintain a reliable radio link between base stations and user terminals. These baseband algorithms are designed to over- come propagation effects, interference effects, and degradation effects resulting from nonlinearities and noise in the hardware implementation. All these effects must therefore be modeled and simulated in the software. Since simulations were widely T • Simon Wasinya Pallam, M.Eng. ElectricalEngineering, Lecturer at Electrical & Electronics Engineering department, Modibbo Adama University of Technology, Yola, Nigeria. E-mail: spallam@yahoo.com • Ibrahim Musa Visa, M.Eng. Electrical Engineering, Lecturer at Electrical & Electronics Engineering department, Modibbo Adama University of Technology, Yola, Nigeria E-mail: visaibrahim@gmail.com • Matthew Luka, M.Eng. Electrical Engineering, Lecturer at Electrical & Electronics Engineering department, Modibbo Adama University of Technology, Yola, Nigeria. E-mail: matthewkl@rocketmail.com IJSER