The current vision of wireless services demands proper data, perfect reliability, throughput, etc. with efficient bandwidth utilization. The presence of various receiving wires in a framework implies the existence of various propagation ways. There are two prime families of multiple input multiple output (MIMO) regarding how to transmit information over provided channel. Spatial diversity (SD) will be enhancing the reliability of the framework, by sending same information over the diverse spread ways. Spatial multiplexing (SM) enhances the information rate of the framework, by putting diverse parts of the information on various engendering ways. These MIMO techniques, when combined with Worldwide Interoperability for Microwave Access (WiMAX), will enhance its performance significantly. In this paper, the focus is on comparing spatial diversity, and spatial multiplexing augmented WiMAX with conventional WiMAX for different modulation levels and code rates. Simulation results depict variations in bit error rate for both the scenarios, i.e., spatial diversity and spatial multiplexing.

OFDM, WiMAX, MIMO, SD, SM.