Traditional wireless and mobile network focuses on higher throughout, coverage and larger capacity. In future, energy efficiency is of vital importance for wireless networks due to a large number of connected and battery constrained mobile devices. In Long Term Evolution Advanced (LTE-Advanced), Carrier Aggregation (CA) is proposed to increase the transmission bandwidth and hence data […]
Read moreLong-Term Evolution Advanced (LTE-A) will rely on the concept of “small cell”, i.e. low-power and low-cost radio base station, whose target is to provide broadband and energy-efficient coverage in residential sites and hot spot outdoor environment. Small cells will be characterized by some peculiar features that will make easier the coordination among base stations in […]
Read moreBLE based Accessory-Smartphone communication (WBANs/WPANs), used for health-care, infotainment and many other applications, usually operate in dynamic environment (varying number of sensors, wireless conditions, etc.). These devices are typically configured in connection-oriented hub-and-spoke model with the Master controller. With an end-objective of optimizing the capacity of BLE (Bluetooth Low Energy) centric systems, we share analytical models, experimental […]
Read moreAn experimental characterization of the off-body propagation channel for the ultrawideband (UWB) band from 3.1 GHz to 8 GHz for body area networks (BAN) is presented in this letter. The channel is evaluated in terms of path loss (PL) and Root Mean Square (RMS) delay spread. Channel statistics from measurements carried out considering subjects of different gender in standing still […]
Read moreWe consider the problem of network coding across three unicast sessions over a directed acyclic graph, where the sender and receiver of each unicast session are both connected to the network via a single edge of unit capacity. We consider a network model in which the middle of the network can only perform random linear […]
Read moreAs a newly emerging network model, heterogeneous information networks (HINs) have received growing attention. Many data mining tasks have been explored in HINs, including clustering, classification, and similarity search. Similarity join is a fundamental operation required for many problems. It is attracting attention from various applications on network data, such as friend recommendation, link prediction, […]
Read moreA wireless capsule endoscope (WCE) is a promising medical device for diagnosis of digestive organs, which takes pictures inside digestive organs, such as large and small intestines and transmits them through implant wireless communications. In a realistic WCE scenario, it is important to precisely estimate the WCE location. Generally, the superiority of TOA-based localization over RSSI-based localization has been […]
Read moreChallenges arose from body effect in design of implant and on-body antennas, has dominated bodyarea network base station antenna design researches. However, design of an efficient base station antenna in a compact size is also a challenge. This letter presents a miniaturized omni-directional antenna in two bands of 403.5 MHz for medical implant communication services (MICS) and 2.45 GHz for industrial, […]
Read moreIn this paper a novel method for synchronization and cell search in 3GPP LTE downlink (DL) system has been proposed. This method performs the symbol timing and physical-layer cell identity estimation in frequency domain with less complexity, utilizing the frequency domain properties of the primary and secondary synchronization signals. The primary synchronization signals have good orthogonal and […]
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Improved PCFICH decoding in LTE systems
This paper studies control format indicator (CFI) estimation methods in 4G-LTE communication systems. CFI is an essential control signal in LTE, and must be correctly detected at the receiver to avoid degraded system performance. The standard method of CFI detection involves the use of the Maximum Likelihood (ML) estimation criterion. Unfortunately, ML decoding performance relies on accurate […]
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