19 citations · 41 across the 8 of their papers we have counts for
9 papers · 1 filter
Antenna Combiner for Periodic Broadcast V2V Communication Under Relaxed Worst-Case Propagation
Chouaib Bencheikh Lehocine, Erik G. Ström, Fredrik Brännström
The performance of a previously developed analog combining network (ACN) of phase shifters for vehicle-to-vehicle communication is investigated. The original ACN was designed to ma…
Code Constructions for Distributed Storage With Low Repair Bandwidth and Low Repair Complexity
Siddhartha Kumar, Alexandre Graell i Amat, Iryna Andriyanova +2
We present the construction of a family of erasure correcting codes for distributed storage that achieve low repair bandwidth and complexity at the expense of a lower fault toleran…
Optimizing MDS Coded Caching in Wireless Networks with Device-to-Device Communication
Jesper Pedersen, Alexandre Graell i Amat, Iryna Andriyanova +1
We consider the caching of content in the mobile devices in a dense wireless network using maximum distance separable (MDS) codes. We focus on an area, served by a base station (BS…
Asymptotic Comparison of ML and MAP Detectors for Multidimensional Constellations
Alex Alvarado, Erik Agrell, Fredrik Brännström
A classical problem in digital communications is to evaluate the symbol error probability (SEP) and bit error probability (BEP) of a multidimensional constellation over an additive…
On Frame Asynchronous Coded Slotted ALOHA: Asymptotic, Finite Length, and Delay Analysis
Erik Sandgren, Alexandre Graell i Amat, Fredrik Brännström
We consider a frame asynchronous coded slotted ALOHA (FA-CSA) system for uncoordinated multiple access, where users join the system on a slot-by-slot basis according to a Poisson r…
Density Evolution for Deterministic Generalized Product Codes on the Binary Erasure Channel at High Rates
Christian Häger, Henry D. Pfister, Alexandre Graell i Amat +1
Generalized product codes (GPCs) are extensions of product codes (PCs) where code symbols are protected by two component codes but not necessarily arranged in a rectangular array.…
Broadcast Coded Slotted ALOHA: A Finite Frame Length Analysis
Mikhail Ivanov, Fredrik Brannstrom, Alexandre Graell i Amat +1
We propose an uncoordinated medium access control (MAC) protocol, called all-to-all broadcast coded slotted ALOHA (B-CSA) for reliable all-to-all broadcast with strict latency cons…
Improving soft FEC performance for higher-order modulations via optimized bit channel mappings
Christian Häger, Alexandre Graell i Amat, Fredrik Brännström +2
Soft forward error correction with higher-order modulations is often implemented in practice via the pragmatic bit-interleaved coded modulation paradigm, where a single binary code…
On Optimal TCM Encoders
Alex Alvarado, Alexandre Graell i Amat, Fredrik Brannstrom +1
An asymptotically optimal trellis-coded modulation (TCM) encoder requires the joint design of the encoder and the binary labeling of the constellation. Since analytical approaches…