Energy Efficiency Evaluation of SISO and MIMO between LTE-Femtocells and 802.11n Networks

• Published in: 2012 IEEE 75th Vehicular Technology Conference (VTC Spring) pp. 1 - 5
• Main Authors: Siyi Wang, Weisi Guo, O'Farrell, T.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.05.2012
• Subjects: Base stations; IEEE 802.11n Standard; Interference; MIMO; Quality of service; Ultrafast electronics
• ISBN: 9781467309899; 1467309893
• ISSN: 1550-2252
• DOI: 10.1109/VETECS.2012.6240229

The objective of this paper is to provide the methodology and results that is used to evaluate a scalable energy performance comparison of LTE-femtocells and 802.11n with both SISO and MIMO antenna configurations. The performance is derived in a multi-user and multi-cell wireless communication system. A system level LTE-femtocell simulator has been developed and an analytical model to evaluate 802.11n network performances has been proposed. It is shown that 1 Femtocell Access Point consistently perform better than 1 802.11n Access Point. This may be explained by the centralised resource allocation and channel access methods used by femtocells compared to distributed methods and CSMA/CA used by 802.11 networks. Generally, SISO deployment is more energy efficient than Alamouti MIMO 2×2.