114 citations · 527 across the 26 of their papers we have counts for
27 papers
Symbol-Level Noise-Guessing Decoding with Antenna Sorting for URLLC Massive MIMO
Sahar Allahkaram, Francisco A. Monteiro, Ioannis Chatzigeorgiou
Supporting ultra-reliable and low-latency communication (URLLC) is a challenge in current wireless systems. Channel codes that generate large codewords improve reliability but nece…
Guessing Random Additive Noise Decoding of Network Coded Data Transmitted over Burst Error Channels
Ioannis Chatzigeorgiou, Dmitry Savostyanov
We consider a transmitter that encodes data packets using network coding and broadcasts coded packets. A receiver employing network decoding recovers the data packets if a sufficie…
An Adaptive Column Compression Family for Self-Driving Databases
Marcell Fehér, Daniel E. Lucani, Ioannis Chatzigeorgiou
Modern in-memory databases are typically used for high-performance workloads, therefore they have to be optimized for small memory footprint and high query speed at the same time.…
URLLC with Coded Massive MIMO via Random Linear Codes and GRAND
Sahar Allahkaram, Francisco A. Monteiro, Ioannis Chatzigeorgiou
A present challenge in wireless communications is the assurance of ultra-reliable and low-latency communication (URLLC). While the reliability aspect is well known to be improved b…
Symbol-Level GRAND for High-Order Modulation over Flat Fading Channels
Ioannis Chatzigeorgiou, Francisco A. Monteiro
Guessing random additive noise decoding (GRAND) is a noise-centric decoding method, which is suitable for ultra-reliable low-latency communications, as it supports high-rate error…
The Impact of Partial Packet Recovery on the Inherent Secrecy of Random Linear Coding
Ioannis Chatzigeorgiou
This paper considers a source, which employs random linear coding (RLC) to encode a message, a legitimate destination, which can recover the message if it gathers a sufficient numb…
Spark Optimization of Linear Codes for Reliable Data Delivery by Relay Drones
Ioannis Chatzigeorgiou
Data gathering operations in remote locations often rely on relay drones, which collect, store and deliver transmitted information to a ground control station. The probability of t…
Transversal GRAND for Network Coded Data
Ioannis Chatzigeorgiou
This paper considers a transmitter, which uses random linear coding (RLC) to encode data packets. The generated coded packets are broadcast to one or more receivers. A receiver can…
Low Complexity Optimization of the Asymptotic Spectral Efficiency in Massive MIMO NOMA
Lucinda Hadley, Ioannis Chatzigeorgiou
Massive multiple-input multiple-output (MIMO) technology facilitates huge increases in the capacity of wireless channels, while non-orthogonal multiple access (NOMA) addresses the…
Decoding Probability Analysis of Network-Coded Data Collection and Delivery by Relay Drones
Ioannis Chatzigeorgiou, Elena Manole
Relay drones in delay-tolerant applications are dispatched to remote locations in order to gather data transmitted by a source node. Collected data are stored on the drones and del…
The Impact of 5G Channel Models on the Performance of Intelligent Reflecting Surfaces and Decode-and-Forward Relaying
Ioannis Chatzigeorgiou
An intelligent reflecting surface (IRS) is an array of discrete elements with configurable scattering properties. It has the capability to beamform arriving radio waves to an inten…
Non-Orthogonal Multiple Access combined with Random Linear Network Coded Cooperation
Amjad Saeed Khan, Ioannis Chatzigeorgiou
This letter considers two groups of source nodes. Each group transmits packets to its own designated destination node over single-hop links and via a cluster of relay nodes shared…
Decoding Delay Performance of Random Linear Network Coding for Broadcast
Ioannis Chatzigeorgiou, Andrea Tassi
Characterization of the delay profile of systems employing random linear network coding is important for the reliable provision of broadcast services. Previous studies focused on n…
Improved bounds on the decoding failure probability of network coding over multi-source multi-relay networks
Amjad Saeed Khan, Ioannis Chatzigeorgiou
This paper considers a multi-source multi-relay network, in which relay nodes employ a coding scheme based on random linear network coding on source packets and generate coded pack…
Probability of Partially Decoding Network-Coded Messages
Jessica Claridge, Ioannis Chatzigeorgiou
In the literature there exists analytical expressions for the probability of a receiver decoding a transmitted source message that has been encoded using random linear network codi…
Bounds on the Lambert function and their application to the outage analysis of user cooperation
Ioannis Chatzigeorgiou
Problems formulated in terms of logarithmic or exponential equations often use the Lambert function in their solutions. Expansions, approximations and bounds on have been d…
Analysis and Optimization of Sparse Random Linear Network Coding for Reliable Multicast Services
Andrea Tassi, Ioannis Chatzigeorgiou, Daniel E. Lucani
Point-to-multipoint communications are expected to play a pivotal role in next-generation networks. This paper refers to a cellular system transmitting layered multicast services t…
Rethinking the Intercept Probability of Random Linear Network Coding
Amjad Saeed Khan, Andrea Tassi, Ioannis Chatzigeorgiou
This letter considers a network comprising a transmitter, which employs random linear network coding to encode a message, a legitimate receiver, which can recover the message if it…
Performance Analysis of Random Linear Network Coding in Two-Source Single-Relay Networks
Amjad Saeed Khan, Ioannis Chatzigeorgiou
This paper considers the multiple-access relay channel in a setting where two source nodes transmit packets to a destination node, both directly and via a relay node, over packet e…
On Optimization of Network-coded Scalable Multimedia Service Multicasting
Andrea Tassi, Ioannis Chatzigeorgiou, Dejan Vukobratović
In the near future, the delivery of multimedia multicast services over next-generation networks is likely to become one of the main pillars of future cellular networks. In this ext…
Optimized Network-coded Scalable Video Multicasting over eMBMS Networks
Andrea Tassi, Ioannis Chatzigeorgiou, Dejan Vukobratović +1
Delivery of multicast video services over fourth generation (4G) networks such as 3GPP Long Term Evolution-Advanced (LTE-A) is gaining momentum. In this paper, we address the issue…
Binary Systematic Network Coding for Progressive Packet Decoding
Andrew L. Jones, Ioannis Chatzigeorgiou, Andrea Tassi
We consider binary systematic network codes and investigate their capability of decoding a source message either in full or in part. We carry out a probability analysis, derive clo…
Resource Allocation Frameworks for Network-coded Layered Multimedia Multicast Services
Andrea Tassi, Ioannis Chatzigeorgiou, Dejan Vukobratović
The explosive growth of content-on-the-move, such as video streaming to mobile devices, has propelled research on multimedia broadcast and multicast schemes. Multi-rate transmissio…
On the Frame Error Rate of Transmission Schemes on Quasi-Static Fading Channels
Ioannis Chatzigeorgiou, Ian J. Wassell, Rolando Carrasco
It is known that the frame error rate of turbo codes on quasi-static fading channels can be accurately approximated using the convergence threshold of the corresponding iterative d…