Prof. Dr. Necmi Serkan TEZEL2025-12-022025-12-02https://dspace.academy.edu.ly/handle/123456789/1834MIMO has been explored to increase the visibility of mobile traffic on 5G wireless systems in the future, while a BS equipped with a large number of antennas will serve multiple users simultaneously. The number of BS antennas is infinite while the number of users is kept constant, thus significantly reducing intracellular interference and uncoordinated sounds. In addition, bulky MIMO systems are very useful in identifying and estimating problems related to sensor networks.Multiple Input Multiple Output (MIMO) denotes a number of areas in wireless transmission in the communications technology, a method and a transmission system for the use of multiple transmitting and receiving antennas for wireless communication. This is the basis for special coding methods that use not only the temporal, but also the spatial dimension to transmit information (space-time coding). This can significantly improve the quality (bit error frequency) and data rate of a wireless connection. MIMO systems can transmit s per Hz bandwidth occupied substantially more bit / and thus have a higher spectral efficiency than conventional Single Input Single Output (SISO) systems, each with an antenna on the sender and receiver side, or Single Input Multiple Output (SIMO) systems with one antenna on the transmitter side and several antennas on the receiver side.EFFICIENCY IN UPLINK MASSIVE MULTIPLE INPUT MULTIPLE OUTPUT SYSTEMSCOMPARATIVE INVESTIGATION OF PILOT DECONTAMINATION SCHEME FOR SPECTRAL EFFICIENCY IN UPLINK MASSIVE MULTIPLE INPUT MULTIPLE OUTPUT SYSTEMS