查看文章

Nowadays the wireless world demands to get high quality of service, wireless communication has been developed by time from using a single antenna at a transmitter and a single antenna (SISO) at a destination to use multiple antennas at a transmitter and multiple antennas at a receiver (MIMO). This method give very efficient results in terms of high quality of services, channel capacity, high data rate etc. In our studies, we will discuss the comparison of channel capacity between different multiple antenna systems and similarly what are their impact in the systems. Since the multiple antenna technique offer the need from serving high channel capacity and high data rate, spatial multiplexing and channel state information techniques are explained in detail to give the reader an overview about advantages of using these techniques. Moreover, at the end of this study, comparison between single antenna systems and multiple antennas are made in regards that channel capacity increased by deploying multiple antennas on both sides and similarly it is one of the best solution for the systems that require high channel capacity, high data rate as well as reliability.