45 citations · 132 across the 25 of their papers we have counts for
7 papers · 1 filter
Energy efficiency of slotted LoRaWAN communication with out-of-band synchronization
Luca Beltramelli, Aamir Mahmood, Patrik Österberg +3
Although the idea of using wireless links for covering large areas is not new, the advent of LPWANs has recently started changing the game. Simple, robust, narrowband modulation sc…
Synchronous LoRa Communication by Exploiting Large-Area Out-of-Band Synchronization
Luca Beltramelli, Aamir Mahmood, Paolo Ferrari +3
Many new narrowband low-power wide-area networks (LPWANs) (e.g., LoRaWAN, Sigfox) have opted to use pure ALOHA-like access for its reduced control overhead and asynchronous transmi…
Autonomous Interference Mapping for Industrial IoT Networks over Unlicensed Bands
Simone Grimaldi, Aamir Mahmood, Syed Ali Hassan +2
The limited coexistence capabilities of current Internet-of-things (IoT) wireless standards produce inefficient spectrum utilization and mutual performance impairment. The entity o…
Performance Analysis of Backscatter Communication Systems with Non-orthogonal Multiple Access in Nakagami Fading Channels
Ahsan Waleed Nazar, Syed Ali Hassan, Haejoon Jung +2
Backscatter communication (BackCom) has been emerging as a prospective candidate in tackling lifetime management problems for massively deployed Internet-of-Things devices, which s…
RSSI Fingerprinting-based Localization Using Machine Learning in LoRa Networks
Mahnoor Anjum, Muhammad Abdullah Khan, Syed Ali Hassan +3
The scale of wireless technologies penetration in our daily lives, primarily triggered by the Internet-of-things (IoT)-based smart cities, is beaconing the possibilities of novel l…
A Blind Signal Separation Algorithm for Energy Detection of Dynamic PU Signals
Jakub Nikonowicz, Aamir Mahmood, Mikael Gidlund
Energy detection process for enabling opportunistic spectrum access in dynamic primary user (PU) scenarios, where PU changes state from active to inactive at random time instances,…
LoRa beyond ALOHA: An Investigation of Alternative Random Access Protocols
Luca Beltramelli, Aamir Mahmood, Patrik Österberg +1
We present a stochastic geometry-based model to investigate alternative medium access choices for LoRaWAN---a widely adopted low-power wide-area networking (LPWAN) technology for t…