System-Level Performance Evaluation for 5G mmWave Cellular Network

Sherif Busari, Shahid Mumtaz, Kazi Mohammed Saidul Huq, Jonathan Rodriguez, Haris Gacanin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Cellular networks with hyper-dense deployment of small cells have been identified as the performance-optimizing architecture for fifth generation (5G) mobile systems. A thousand-fold capacity increase is projected when such networks benefit from aggressive spatial multiplexing and huge bandwidth, realizable with massive antenna arrays and millimeter-wave (mmWave) spectrum, respectively. As a precursor to the 5G projections, we show in this paper that network performance (cell capacity, user throughputs and spectral efficiency) can be significantly increased by overlaying mmWave small cells on microwave (μWave) macrocells, due to the elimination of cross-tier interference. This is without any increase in bandwidth or antenna configuration of legacy dense networks. Dramatic performance gains can further be achieved by employing more antenna arrays and larger bandwidth. In addition, we demonstrate that such networks are density-limited. Increasing the number of small cells per macrocell beyond the optimal cell density threshold leads to performance degradation. Adequate consideration should, therefore, be given to this limit in the design, planning and operation of future cellular networks.
Original languageEnglish
Title of host publicationGLOBECOM 2017 - 2017 IEEE Global Communications Conference
Place of PublicationSingapore, Singapore
PublisherInstitute of Electrical and Electronics Engineers
Number of pages7
ISBN (Electronic)978-1-5090-5019-2
ISBN (Print)978-1-5090-5020-8
Publication statusPublished - 5 Dec 2017


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