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Performance Improvement of WIMAX with FEC Zigzag Code Using MIMO Technique

The telecommunication industry has been developing at a very fast rate. This paper presents the performance enhancement of the WiMAX system (Worldwide Interoperability for microwave Access) by using MIMO Technique. WiMAX an emerging global broadband wireless OFDM-based technology that provide high quality broadband services. Mobile WiMAX is a wireless networking system which provides wireless broadband to fixed and mobile terminals. In this paper, we investigated the performance of WiMAX system for different modulation technique Quadrature Phase Shift keying (QPSK) and Quadrature Amplitude Modulation (QAM). In this paper, we evaluate bit-error rate performance of WiMAX system with zigzag coded modulation with different code rate and code length. The results show that the proposed zigzag-coded modulation presents a stronger error correcting capability as compared to the Reed Solomon with Convolutional code.