Energy Efficient D2D Communication Under Downlink Heterogeneous Network

The increase in cellular users (CU) caused data traffic congestion on the Base Station (BS). Device to (D2D) communication can be used reduce BS. D2D is direct between devices without using a central BS congestion. CU and will share same Resource Block (RB), but there drawback that causes interference. This study employs downlink direction Heterogeneous Network (HetNet) system model mitigate interference issues. allocation performed greedy algorithm, enhance its performance, two small cell base stations (SB) were incorporated, denoted as SB1 (1st SB) SB2 (2nd SB), thereby transforming algorithm into with SB1SB2. A comparative analysis was conducted SB1SB2 conventional (without addition of SB2). Furthermore, authors manipulated radius macro station (MB) this examine impact performance. results obtained from simulation are getting lower value sum rate 1.62 × 108 bps, spectral efficiency 9.02 bps/Hz, total fairness (CU D2D) 0.4095. Meanwhile, terms power efficiency, has higher 10.40%. However, resource both algorithms not best solution. So resulting performance parameters less than optimal.