Medium access control protocol design for wireless communications and networks review

Abstract

<p><span>Medium access control (MAC) protocol design plays a crucial role to increase the performance of wireless communications and networks. The channel access mechanism is provided by MAC layer to share the medium by multiple stations. Different types of wireless networks have different design requirements such as throughput, delay, power consumption, fairness, reliability, and network density, therefore, MAC protocol for these networks must satisfy their requirements. In this work, we proposed two multiplexing methods for modern wireless networks: Massive multiple-input-multiple-output (MIMO) and power domain non-orthogonal multiple access (PD-NOMA). The first research method namely Massive MIMO uses a massive number of antenna elements to improve both spectral efficiency and energy efficiency. On the other hand, the second research method (PD-NOMA) allows multiple non-orthogonal signals to share the same orthogonal resources by allocating different power level for each station. PD-NOMA has a better spectral efficiency over the orthogonal multiple access methods. A review of previous works regarding the MAC design for different wireless networks is classified based on different categories. The main contribution of this research work is to show the importance of the MAC design with added optimal functionalities to improve the spectral and energy efficiencies of the wireless networks.</span></p>

Enhancement of outage probability for down link cooperative non-orthogonal multiple access in fifth-generation network

“…The reason for this is that there is less interference between users when they are further apart in terms of their PLC. Statistics show that this level of performance is 20% higher than that of [17]. The MIMO approach improves overall OP performance, with values attained that is 5% greater than those observed in [22].…”

“…Combining NOMA with the various forms of multiple-input-multiple-output (MIMO) communication is one of the most effective ways to achieve high spectrum efficiency, which makes it an important element in the design of cellular communication systems. By placing a large number of antennas and making use of the space field for multiple users, massive MIMO is a crucial fifth-generation (5G) enabler that can minimize system latency and give amazing communication benefits [16], [17]. cooperative (C-NOMA) technology combined with massive MIMO yields greater spectrum and conductivity gains [17].…”

“…By placing a large number of antennas and making use of the space field for multiple users, massive MIMO is a crucial fifth-generation (5G) enabler that can minimize system latency and give amazing communication benefits [16], [17]. cooperative (C-NOMA) technology combined with massive MIMO yields greater spectrum and conductivity gains [17].…”