Alexios Konstantinos Balatsoukas Stimming

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In this work, we study the coded frame error rate (FER) of LoRa under additive white Gaussian noise (AWGN) and under carrier frequency offset (CFO). To this end, we use existing approximations for the bit error rate (BER) of the LoRa modulation under AWGN ...

In-band full-duplex systems promise to further increase the throughput of wireless systems, by simultaneously transmitting and receiving on the same frequency band. However, concurrent transmission generates a strong self-interference signal at the receive ...

Non-linearities introduced by the power amplifier stage can significantly reduce the performance of self-interference cancellation in full-duplex transceivers. Accordingly, we propose a full-duplex system architecture that predistorts the digital baseband ...

Lyra2REv2 is a hashing algorithm that consists of a chain of individual hashing algorithms and it is used as a proof-of-work function in several cryptocurrencies that aim to be ASIC-resistant. The most crucial hashing algorithm in the Lyra2REv2 chain is a ...

The joint design of input constellation and low-density parity-check (LDPC) codes to approach the symmetric capacity of the two-user Gaussian multiple access channel is studied. More specifically, multilevel coding is employed at each user to construct a h ...

In this work, we study the computational complexity of the Minimum Distance Code Detection problem. In this problem, we are given a set of noisy codeword observations and we wish to find a code in a set of linear codes C of a given dimension k, for which t ...

Polar codes are a recent family of error-correcting codes with a number of desirable characteristics. Their disruptive nature is illustrated by their rapid adoption in the 5 th-generation mobile-communication standard, where they are used to protect contro ...

Due to the low-latency and high-reliability require-ments of 5G, low-complexity node-based successive cancellation list (SCL) decoding has received considerable attention for use in 5G communications systems. By identifying special constituent codes in the ...

LoRa is a popular low-power wide-area network (LPWAN) technology that uses spread-spectrum to achieve long-range connectivity and resilience to noise and interference. For energy efficiency reasons, LoRa adopts a pure ALOHA access scheme, which leads to re ...

LoRa is a chirp spread-spectrum modulation developed for the Internet of Things (IoT). In this work, we examine the performance of LoRa in the presence of both additive white Gaussian noise and interference from another LoRa user. To this end, we extend an ...

Neural networks have become indispensable for a wide range of applications, but they suffer from high computational- and memory-requirements, requiring optimizations from the algorithmic description of the network to the hardware implementation. Moreover, ...

In this work, we examine the performance of the LoRa chirp spread spectrum modulation in the presence of both additive white Gaussian noise and interference from another LoRa user. To this end, we extend an existing interference model to the more realistic ...

Polar codes are a new class of block codes with an explicit construction that provably achieve the capacity of various communications channels, even with the low-complexity successive-cancellation (SC) decoding algorithm. Yet, the more complex successive-c ...

Compared with the bit-wise successive cancellation list (SCL) decoding of polar codes, the node-based Fast SCL decoding significantly reduces the decoding latency by identifying special constituent codes and decoding these in parallel. To further reduce th ...

Alexios Konstantinos Balatsoukas Stimming

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Coded LoRa Frame Error Rate Analysis

On the Implementation Complexity of Digital Full-Duplex Self-Interference Cancellation

Digital Predistortion of Power Amplifier Non-Linearities for Full-Duplex Transceivers

A Lyra2 FPGA Core for Lyra2REv2-Based Cryptocurrencies

LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel

On the Computational Complexity of Blind Detection of Binary Linear Codes

On the Tradeoff Between Accuracy and Complexity in Blind Detection of Polar Codes

A Sequence Repetition Node-Based Successive Cancellation List Decoder for 5G Polar Codes: Algorithm and Implementation

A Maximum-Likelihood-based Multi-User LoRa Receiver Implemented in GNU Radio

On the Error Rate of the LoRa Modulation With Interference

Lupulus: A Flexible Hardware Accelerator For Neural Networks

LoRa Symbol Error Rate Under Non-Aligned Interference

A Multi-Gbps Unrolled Hardware List Decoder Systematic Polar Code

Fast Sequence Repetition Node-Based Successive Cancellation List Decoding for Polar Codes

Sliding Window Spectrum Sensing for Full-Duplex Cognitive Radios with Low Access-Latency

An FPGA-based Accelerator for Rapid Simulation of SC Decoding of Polar Codes