Volume 6 Number 4 (Jul. 2016)

Volume 6 Number 4 (Jul. 2016)

Article#	Article Title & Authors	Page
627	An Overview of Pilot Decontamination Methods in TDD Massive MIMO Systems Sajjad Ali, Zhe Chen, and Fuliang Yin	214
628	Design of Substrate Integrated Waveguide Multi-band Slots Array Antennas Keltouma Nouri, Tayeb Habib Chawki Bouazza, Boubakar Seddik Bouazza, Mehdi Damou, Kada Becharef, and Salima Seghier	221
629	Differential-Mode Branch-Line Directional Couplers J. Sorocki, I. Piekarz, K. Staszek, P. Kaminski, K. Wincza, and S. Gruszczynski	226
630	Design and Optimization of a Microstrip Bandpass Filter for Ultra Wideband (UWB) Wireless Communication S. Seghier, N. Benabdallah, N. Benahmed, and K. Nouri	230
631	Modified Root MUSIC for Adjacent Coherent Sources Hassan Mohamed El-Kamchouchi and Ahmed Samir El-Torgoman	234
632	Distributed Reconfiguration Algorithm for Self-Repairing in Cell-Based Architecture Chanin Wongyai and Pradondet Nilagupta	238
633	Exploiting Online Social Network Structural Properties for Information Spreading Edward Yellakuor Baagyere, Zhen Qin, Hu Xiong, and Qin Zhiguang	247
634	Context Selection Optimization Using Quality of Context for Context Refinement in Internet of Things Ntalasha Derrick, Li Renfa, and Wang Yongheng	256
635	Review Social Network Analysis and Mining: Link Prediction Kalum P. Udagepola and Fatima Chiroma	265
636	A kNN Approach for ECG Signal Quality Classification Tanatorn Tanantong	269