الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Fourth generation (4G) of cellular networks, was initially roll out in 2009/2010 to supersede the third generation (3G). Currently, fifth generation (5G) is the forthcoming evolution of mobile technology hopped to be used starting from the past 2020 with a wide range of services and usability applications beyond 4G. Three main services, enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC) and massive machine type communication (mMTC) have been imposed as an air interface to 5G over so many other requirements. Orthogonal Frequency Division Multiplexing (OFDM) has been the most attractive candidate for the development of wireless communication system like 4G due to several advantages such as ease of implementation, immunity to interference, high data rate, … etc. However, 5G demands much more from physical layer than the current OFDM can deliver. Therefore, some more enhanced waveforms have been proposed to address the challenges of OFDM. In this thesis, the detailed analysis and comparison for the candidate waveforms, namely, filter bank multicarrier (FBMC), generalized frequency division multiplexing (GFDM) and universal-filtered multicarrier (UFMC) are initially introduced. To obtain insightful analysis we will not only introduce the basic principle of the waveforms but also the characteristics of each waveforms will be revealed as well. Also, the performance comparison in terms of power spectral density (PSD), bit error rate (BER) and spectral efficiency is presented. Moreover, the computational complexity of waveforms in different cases is evaluated. Finally, the mathematical analysis and characterizations are validated by computer simulation employing MATLAB. UFMC is presented instead of OFDM to be used for the future wireless communication systems so that it becomes the candidate for 5G Mobile Systems. This because of its good robustness against inter-carrier interference (ICI). Accordingly, the research is initiated by studying a verity of pulse shaping approaches in UFMC technique to select the most suitable one which reduces the spectral leakage into nearby sub-bands. Therefore, various window functions, such as Chebyshev, Hamming, Hanning, and Blackman are investigated with UFMC to summarize and conclude the best performance to be selected throughout this research. Results show that Blackman window has a higher attenuation for sidebands compared with others. One of the challenges which faces UFMC system is the high value of peak to average power ratio (PAPR). Different reduction techniques are to be used to solve this problem. Both the μ-law companding and selective mapping (SLM) techniques are applied to UFMC system to overcome this drawback. The effect of using these techniques on the BER performance and PAPR degradation is investigated with the mathematical analysis simulation program (MATLAB). In addition to, multiple-input multiple-output (MIMO) can be used for 5th cellular systems. It uses space-time block codes (STBC) widely because of their ability to achieve full diversity and their simple linear processing at the receiver. In this thesis, different approaches for the application of STBCs in UFMC are presented. They are based on type of receive filtering used. The performance of using STBC for UFMC system is analyzed and then compared with the ordinary OFDM system. As a summary, STBC can be applied to UFMC system using Blackman window to achieve a higher attenuation for sidebands and gain the advantages of full diversity as well.