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This paper investigates the problem of MAI (multiple access interference) occurrence when timing misalignment occurs in the downlink channel of OFDM-based networks. The adaptive guard band allocation scheme is mainly designed to achieve timing synchronization while reducing guard carrier redundancy and maintaining high channel throughput in asynchronous OFDM-based networks. Thus, the proposed scheme...
The IEEE 802.15.4 standard specifies the physical and medium access control layers designed for low-rate wireless personal area networks. Its operational frequency band includes the 2.4 GHz industrial, scientific and medical band, which is also used by other IEEE 802 wireless standards. This paper presents the coexistence model of IEEE 802.15.4 with IEEE 802.1 lb interference in fading channels and...
In this paper, we evaluated effects of ICI (inter-cell interference) on an OFDM (orthogonal frequency division multiplexing) based wireless communication system's reverse link capacity and suggested macroscopic diversity oriented resource allocation scheme to reduce interference and enhance reverse link capacity. For this, the exact amount of ICIs in the system is measured and represented as a closed...
It is well known that high multi-user and multi-carrier diversity gains can be achieved via the use of DCA (dynamic channel allocation). However, there is no framework for analyzing the system performance of DCA algorithms over multi-cell environments. This paper presents a numerical analysis for measuring the performance gain for various DCA algorithms. Based on the analysis, an LQE (location-based...
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