Performance of MIMO-OFDM Transmission System on Wireless Networks

A detailed study of the performance of MIMOOFDM transmission on WLAN physical layer specified in IEEE 802.11n, Wi-MAX (IEEE 802.16-2009) physical layer specified in 802.16 and LTE downlink physical channel (PDSCH) has been carried out using MATLAB Simulink. The WLAN and Wi-MAX system incorporates Convolution coding with 1/2 and 2⁄3 rated codes. The LTE incorporates Turbo coding with 1/2 and 2/3 rated codes. Orthogonal Frequency Division Multiple (OFDM) accesses uses adaptive modulation technique such as QPSK,16-QAM and 64QAM, on the physical layer of WLAN, Wi-MAX and LTE and the concept of cyclic prefix that adds additional bits at the transmitter end. The Error Rate (BER) derived from simulation results show that the implementation with interleaved Convolution coding and Turbo coding under QPSK modulation technique is found to be highly efficient for WLAN, Wi-MAX and LTE wireless network system. The Implementation of MIMO–OFDM multiplexing on WLAN networks with QPSK modulation at BER ~10 dB, exhibits significant improvement in SNR ~ 2.75 dB, WiMAX network SNR ~ 3.75 dB and LTE network SNR ~7.55 dB. The improvement of SNR ~4.8 dB displayed between the MIMO-OFDM implementation on WLAN and LTE network can be attributed to the Turbo coding techniques adopted in LTE networks. Keywords-Multiple Input Multiple Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), Phase Shift Keying (PSK), Quadrature Amplitude modulation (QAM), Bit Error Rate (BER), Signal to Noise Ratio (SNR), Line-of-Sight (LoS), Forward Error Correction (FEC), Wireless Local Area Network (WLAN), Worldwide interoperability for Microwave Access (WiMAX), Long Term Evaluation (LTE), Subscriber Station (SS), Base Station (BS).

[1]  A. Katalinic,et al.  Benefits of MIMO Systems in Practice: Increased Capacity, Reliability and Spectrum Efficiency , 2006, Proceedings ELMAR 2006.

[2]  Mário Serafim Nunes,et al.  Performance evaluation of IEEE 802.11e , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[3]  Shlomo Shamai,et al.  The Capacity Region of the Gaussian Multiple-Input Multiple-Output Broadcast Channel , 2006, IEEE Transactions on Information Theory.

[4]  Carl Eklund.  WirelessMAN: Inside the IEEE 802.16 Standard for Wireless Metropolitan Area Networks , 2006 .

[5]  Arogyaswami Paulraj,et al.  Analysis and modeling of multiple-input multiple-output (MIMO) radio channel based on outdoor measurements conducted at 2.5 GHz for fixed BWA applications , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[6]  Kuang-Hao Lin,et al.  Implementation of synchronization for 2x2 MIMO WLAN system , 2006, IEEE Transactions on Consumer Electronics.

[7]  Gazi Faisal Ahmed Jubair,et al.  Performance Evaluation of IEEE 802.16e (Mobile WiMAX) in OFDM Physical Layer , 2009 .

[8]  A. G. R. G. Hanna,et al.  Development of Wimax Physical Layer Building Blocks , 2012, 2012 Third International Conference on Intelligent Systems Modelling and Simulation.

[9]  H. Bölcskei,et al.  MIMO-OFDM wireless systems: basics, perspectives, and challenges , 2006, IEEE Wireless Communications.

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

[11]  Lajos Hanzo,et al.  Coherent versus Non-coherent and Cooperative Turbo Transceivers , 2010 .

[12]  Mohamed Othman,et al.  IEEE 802.16: WiMAX Overview, WiMAX Architecture , 2013 .

[13]  Jeffrey G. Andrews,et al.  Fundamentals of WiMAX: Understanding Broadband Wireless Networking , 2007 .

[14]  Mandeep Singh,et al.  Bit Error Rate Evaluation of IEEE 802.16 (WiMAX) in OFDM System , 2012 .

[15]  Khaled Elleithy,et al.  WIMAX BASICS FROM PHY LAYER TO SCHEDULING AND MULTICASTING APPROACHES , 2011 .

[16]  Vijay K. Jain,et al.  Channel estimation for a new high performance MIMO STC-OFDM WLAN system , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[17]  Kamran Etemad,et al.  Overview of mobile WiMAX technology and evolution , 2008, IEEE Communications Magazine.

[18]  Christian Drewes,et al.  MIMO Schemes in UTRA LTE, A Comparison , 2008, VTC Spring 2008 - IEEE Vehicular Technology Conference.