This research work elaborates and analyses the mobile communication network in various standards. In this research workdeveloped low complexity algorithms in MIMO-OFDM systems in 6G technology. 6G wireless networks are anticipated to exhibit significant advancements compared to previous technologies, offering increased network speeds and expanded bandwidth. The development of 6G technologies facilitates the deployment of various applications, such as Machine Learning, Artificial Intelligence (AI), Internet of Things (IoT), and Energy Harvesting Techniques.This method is to minimize the bit error rate (BER), to increase the signal to noise ratio (SNR) and to reduce the power consumption. 6G will be fulfilled to launch the space-air-ground-sea integrated network. The 6G scope of the technology together can be phrased as “Whatever You think, Your Network Follows”.With emerge of new applications like interactive services and the real-time projects and with the quick development in smart terminals.

6G, massive multiple-input multiple-output (MIMO), multi-carrier (MC).