Downlink femto-macro ICI cancellation by on request channel allocation in LTE network

Rezvy, Shahadate ORCID: https://orcid.org/0000-0002-2684-7117, Rahman, Shahedur ORCID: https://orcid.org/0000-0002-6568-6264, Lasebae, Aboubaker ORCID: https://orcid.org/0000-0003-2312-9694 and Loo, Jonathan (2014) Downlink femto-macro ICI cancellation by on request channel allocation in LTE network. In: 48th Annual Conference on Information Sciences and Systems (CISS-2014), 19-21 Mar 2014, Princeton University, New Jersey, USA. . [Conference or Workshop Item]

Abstract

Development of femtocells is the most recent step towards increasing the network capacity of a wireless network and improving the quality of service for cellular users. A conventional cellular network overlaid with femtocells can provide to improve coverage, quality of service, and access network capacity. Long Term Evolution (LTE) has introduced Femtocells technology in cellular mobile communication system in order to enhance indoor coverage. Femtocell is low-power, very small and cost effective cellular base station used in indoor environment. However, the impact of Femtocells on the performance of the conventional Macrocell system leads interference problem between Femtocells and pre-existing Macrocells as they share the same licensed frequency spectrum. In this paper, we propose an efficient method to cancel interference and improve system capacity in the existing Femto-Macro two tier networks. In our proposed scheme, we use a novel frequency planning for two tiers cellular networks using frequency reuse technique where Macro base stations allocate frequency sub-bands for Femtocells users on request basis through Femtocells base stations. This novel frequency reuse technique aims to cancel interference by improving system throughput

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