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Inter-WBANs Interference Mitigation Using Orthogonal Walsh Hadamard Codes

2016/11/02 by Mohamad Ali, Mohamad Jaafar Ali, Hassine Moungla +6
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Molecular Communication and Nanonetworks #Networking and Internet Architecture (cs.NI) #Wireless Body Area Networks #cs.NI

paper · pdf · doi:10.48550/arxiv.1611.00708

2016 27th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Valencia, Spain

arxiv created 2016/11/02 · openalex publication_date 2016/11/02 · arxiv updated 2016/11/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A Wireless Body Area Network (WBAN) provides health care services. The performance and utility of WBANs can be degraded due to interference. In this paper, our contribution for co-channel interference mitigation among coexisting WBANs is threefold. First, we propose a distributed orthogonal code allocation scheme, namely, OCAIM, where, each WBAN generates sensor interference lists (SILs), and then all sensors belonging to these lists are allocated orthogonal codes. Secondly, we propose a distributed time reference correlation scheme, namely, DTRC, that is used as a building block of OCAIM. DTRC enables eachWBAN to generate a virtual time-based pattern to relate the different superframes. Accordingly, DTRC provides each WBAN with the knowledge about, 1) which superframes and, 2) which time-slots of those superframes interfere with the time-slots within its superframe. Thirdly, we further analyze the success and collision probabilities of frames transmissions when the number of coexisting WBANs grows. The simulation results demonstrate that OCAIM outperforms other competing schemes in terms of interference mitigation and power savings.

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