Performance analysis of MIMO-OFDM systems with focus on WiMAX

The demand of different multimedia services and different internet supported applications on mobile devices requires a high speed data rate and good service of quality. This can be obtained by implementing multiple Antenna technology on both stations i.e. User terminal and base station with an appropriate coding technique, and on the other hand MIMO can fulfill 3G & 4G demand and standard with a combination of other techniques. The MIMO diversity and MIMO multiplexing are the key factors to discuss and matter of concern is to achieve and support high speed data rate. MIMO multiplexing is a way to gain robustness and achievement in speed of data information. This thesis work describes a brief overview of WiMAX technology and MIMO-OFDM system and it also discusses the simplest Space time block code (STBC) known as Alamouti Space Time Code. The research approach is a literary survey to have theoretical understanding of the MIMO-OFDM system and WiMAX. The system‘s error performance is analyzed through simulation which showed the simulated results of Multi-Rate Resource Control (MRRC) scheme and Alamouti scheme are identical. And also the Bit Error Rate (BER) were checked for different MIMO systems, the simulation results shows that the BER improved to agreeable value also gains maximum diversity when the number of antennas increased on the receiver side. By improving the BER, we will get the better QoS. Matlab simulation has been performed, and presented the results, which shows the considerable error free transmission (FEC) for MIMO systems in WiMAX technology.

[1]  Geoffrey Ye Li,et al.  Signal detection for MIMO-OFDM wireless communications , 2001, ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240).

[2]  Markus Rupp,et al.  Adaptive Channel-Matched Extended Alamouti Space-Time Code Exploiting Partial Feedback , 2004 .

[3]  Fernando H. Gregorio.  SPACE TIME CODING FOR MIMO SYSTEMS , 2005 .

[4]  M. Rupp,et al.  On extended Alamouti schemes for space-time coding , 2002, The 5th International Symposium on Wireless Personal Multimedia Communications.

[5]  Rick S. Blum,et al.  Improved space-time coding for MIMO-OFDM wireless communications , 2001, IEEE Trans. Commun..

[6]  Ta-Sung Lee.  MIMO Techniques for Wireless Communications , 2005 .

[7]  Branka Vucetic,et al.  Space-Time Coding , 2003 .

[8]  E. Masoud,et al.  Space-Time Block Coding for Wireless Communications , 2008 .

[9]  Gerhard Schmidt,et al.  Signal processing for in-car communication systems , 2006, Signal Process..

[10]  Sirikiat Lek Ariyavisitakul,et al.  Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels , 1999, IEEE J. Sel. Areas Commun..

[11]  Dušan Matiæ,et al.  OFDM as a possible modulation technique for multimedia applications in the range of mm waves , 1998 .

[12]  H. Hashemi,et al.  The indoor radio propagation channel , 1993, Proc. IEEE.

[13]  Gregory W. Wornell,et al.  Efficient use of side information in multiple-antenna data transmission over fading channels , 1998, IEEE J. Sel. Areas Commun..

[14]  B. Saltzberg,et al.  Performance of an Efficient Parallel Data Transmission System , 1967, IEEE Transactions on Communication Technology.

[15]  Tim C. W. Schenk,et al.  Implementation of a MIMO OFDM-based wireless LAN system , 2004, IEEE Transactions on Signal Processing.

[16]  R. Chang.  Synthesis of band-limited orthogonal signals for multichannel data transmission , 1966 .

[17]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[18]  Ye Li.  OFDM for wireless communications: techniques for capacity improvement , 1998, ICCT'98. 1998 International Conference on Communication Technology. Proceedings (IEEE Cat. No.98EX243).

[19]  Jack McCullough,et al.  Caution! Wireless Networking: Preventing a Data Disaster , 2004 .

[20]  Gerard J. Foschini,et al.  Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas , 1996, Bell Labs Technical Journal.

[21]  Rick S. Blum,et al.  Optimum space-time convolutional codes , 2000, 2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540).

[22]  A. Robert Calderbank,et al.  Space-time codes for high data rate wireless communication: performance criteria , 1997, Proceedings of ICC'97 - International Conference on Communications.

[23]  Paolo Prandoni,et al.  Signal Processing for Communications , 2008, Communication and information sciences.

[24]  Srikrishna Bhashyam,et al.  Feedback gain in multiple antenna systems , 2002, IEEE Trans. Commun..

[25]  Kaur Inderjeet,et al.  Orthogonal Frequency Division Multiplexing: An Overview , 2007, ArXiv.

[26]  W. C. Jakes,et al.  Mobile Radio Propagation , 1974 .