In today’s world the key challenges for wireless communication are the data rate and quality of service (QoS). Diversity schemes could lower... Show moreIn today’s world the key challenges for wireless communication are the data rate and quality of service (QoS). Diversity schemes could lower the probability of outage thereby increasing the data rates and QoS. One method of diversity is deploying multiple antennas at the receiver and transmitter that create multiple-input multiple-output (MIMO) systems which not only increase the data rate, but also provide higher reliability, robustness and QoS as compared to single antenna systems. This work provides a comprehensive analysis of the performance of the space-time block codes in fading environment. We also provide a new space-time coding scheme based on circulant matrices, Circulant Space-Time Codes, which is linear and orthogonal with rate one for any number of transmitters. We calculate the pairwise error probability (PEP) under block fading environment. Then we use this PEP expression to calculate the union bounds on performance of the CSTCs. Simulation results shows that by increasing the number of receivers wherein number of transmitters increase the probability of symbol error rate would decrease. Since this code is orthogonal the decoding complexity is low as compared to other block codes. M.S. in Electrical Engineering, July 2013 Show less
