Roope Vehkalahti

Publication Activity (10 Years)

Years Active: 2005-2023
Publications (10 Years): 35

Top Topics

Intersymbol Interference

Algebraic Operations

Top Venues

IEEE Trans. Inf. Theory

Publications

Jialing Liao, Roope Vehkalahti, Tefjol Pllaha, Wei Han, Olav Tirkkonen
Modular CSI Quantization for FDD Massive MIMO Communication. CoRR (2023)
Jialing Liao, Roope Vehkalahti, Tefjol Pllaha, Wei Han, Olav Tirkkonen
Modular CSI Quantization for FDD Massive MIMO Communication. IEEE Trans. Wirel. Commun. 22 (12) (2023)
Radoslaw Kotaba, Roope Vehkalahti, Cedomir Stefanovic, Olav Tirkkonen, Petar Popovski
Deterministic Patterns for Multiple Access in Latency-Constrained Ultra-Reliable Communications. CoRR (2022)
Charles Grover, Andrew Mendelsohn, Cong Ling, Roope Vehkalahti
Non-commutative Ring Learning with Errors from Cyclic Algebras. J. Cryptol. 35 (3) (2022)
Jari Lietzén, Olav Tirkkonen, Roope Vehkalahti
Secret Keys from Parity Bits in the Satellite Setting. ISIT (2022)
Roope Vehkalahti, Laura Luzzi
The DMT of Real and Quaternionic Lattice Codes and DMT Classification of Division Algebra Codes. IEEE Trans. Inf. Theory 68 (5) (2022)
Roope Vehkalahti, Tefjol Pllaha, Olav Tirkkonen
Towards Ultra-Reliable Signature Coding With Multiple Transmit Antennas. VTC Spring (2021)
Roope Vehkalahti, Tefjol Pllaha, Olav Tirkkonen
Signature Code Design for Fast Fading Channels. ISIT (2021)
Roope Vehkalahti, Laura Luzzi
The DMT of Real and Quaternionic Lattice Codes and DMT Classification of Division Algebra Codes. CoRR (2021)
Roope Vehkalahti, Jialing Liao, Tefjol Pllaha, Wei Han, Olav Tirkkonen
CSI Quantization for FDD Massive MIMO Communication. VTC Spring (2021)
Jari Lietzén, Roope Vehkalahti, Olav Tirkkonen
A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER. ISIT (2020)
Charles Grover, Cong Ling, Roope Vehkalahti
Non-Commutative Ring Learning With Errors From Cyclic Algebras. CoRR (2020)
Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen, Antti Laaksonen
Code Design Principles for Ultra-Reliable Random Access with Preassigned Patterns. ISIT (2019)
Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen, Antti Laaksonen
Code Design Principles for Ultra-Reliable Random Access with Preassigned Patterns. CoRR (2019)
Laura Luzzi, Roope Vehkalahti, Cong Ling
Almost universal codes for MIMO wiretap channels. IACR Cryptol. ePrint Arch. 2019 (2019)
Laura Luzzi, Roope Vehkalahti
The DMT Classification of Real and Quaternionic Lattice Codes. ISIT (2018)
Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen
Grant-Free Access in URLLC with Combinatorial Codes and Interference Cancellation. GLOBECOM Workshops (2018)
Laura Luzzi, Roope Vehkalahti, Cong Ling
Almost Universal Codes for MIMO Wiretap Channels. IEEE Trans. Inf. Theory 64 (11) (2018)
Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen
Interference Cancelling Codes for Ultra-Reliable Random Access. Int. J. Wirel. Inf. Networks 25 (4) (2018)
Laura Luzzi, Roope Vehkalahti
The DMT classification of real and quaternionic lattice codes. CoRR (2018)
Laura Luzzi, Roope Vehkalahti
Almost Universal Codes Achieving Ergodic MIMO Capacity Within a Constant Gap. IEEE Trans. Inf. Theory 63 (5) (2017)
Olav Tirkkonen, Christopher Boyd, Roope Vehkalahti
Grassmannian codes from multiple families of mutually unbiased bases. ISIT (2017)
Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen
Combinatorial code designs for ultra-reliable IoT random access. PIMRC (2017)
Laura Luzzi, Roope Vehkalahti
Algebraic lattice codes for linear fading channels. CoRR (2017)
Laura Luzzi, Roope Vehkalahti, Cong Ling
Almost universal codes for MIMO wiretap channels. CoRR (2016)
Laura Luzzi, Cong Ling, Roope Vehkalahti
Almost universal codes for fading wiretap channels. CoRR (2016)
Laura Luzzi, Cong Ling, Roope Vehkalahti
Almost universal codes for fading wiretap channels. ISIT (2016)
Laura Luzzi, Roope Vehkalahti, Alexander Gorodnik
Towards a complete DMT classification of division algebra codes. ISIT (2016)
Laura Luzzi, Roope Vehkalahti
Almost universal codes achieving ergodic MIMO capacity within a constant gap. CoRR (2015)
Roope Vehkalahti, Laura Luzzi
Estimates for the growth of inverse determinant sums of quasi-orthogonal and number field lattices. CoRR (2015)
Laura Luzzi, Roope Vehkalahti
Division algebra codes achieve MIMO block fading channel capacity within a constant gap. ISIT (2015)
Toni Ernvall, Jyrki T. Lahtonen, Hsiao-feng Francis Lu, Roope Vehkalahti
An Error Event Sensitive Tradeoff Between Rate and Coding Gain in MIMO MAC. IEEE Trans. Inf. Theory 61 (11) (2015)
Roope Vehkalahti, Laura Luzzi
Number field lattices achieve Gaussian and Rayleigh channel capacity within a constant gap. ISIT (2015)
Benjamin Linowitz, Matthew Satriano, Roope Vehkalahti
A Noncommutative Analogue of the Odlyzko Bounds and Bounds on Performance for Space-Time Lattice Codes. IEEE Trans. Inf. Theory 61 (4) (2015)
Laura Luzzi, Roope Vehkalahti, Alexander Gorodnik
Towards a complete DMT classification of division algebra codes. CoRR (2015)
Roope Vehkalahti, Laura Luzzi, Jean-Claude Belfiore
Shifted inverse determinant sums and new bounds for the DMT of space-time lattice codes. CoRR (2014)
Roope Vehkalahti, Laura Luzzi, Jean-Claude Belfiore
Shifted inverse determinant sums and new bounds for the DMT of space-time lattice codes. ISIT (2014)
Roope Vehkalahti, Wittawat Kositwattanarerk, Frédérique E. Oggier
Constructions a of lattices from number fields and division algebras. ISIT (2014)
Roope Vehkalahti, Laura Luzzi
Number field lattices achieve Gaussian and Rayleigh channel capacity within a constant gap. CoRR (2014)
Laura Luzzi, Roope Vehkalahti
Division algebra codes achieve MIMO block fading channel capacity within a constant gap. CoRR (2014)
Benjamin Linowitz, Matthew Satriano, Roope Vehkalahti
A non-commutative analogue of the Odlyzko bounds and bounds on performance for space-time lattice codes. CoRR (2014)
Laura Luzzi, Roope Vehkalahti
A new design criterion for spherically-shaped division algebra-based space-time codes. ITW (2013)
Laura Luzzi, Roope Vehkalahti
A new design criterion for spherically-shaped division algebra-based space-time codes. CoRR (2013)
Toni Ernvall, Jyrki T. Lahtonen, Hsiao-feng Lu, Roope Vehkalahti
An error event sensitive trade-off between rate and coding gain in MIMO MAC. CoRR (2013)
Roope Vehkalahti, Hsiao-feng Francis Lu, Laura Luzzi
Inverse Determinant Sums and Connections Between Fading Channel Information Theory and Algebra. IEEE Trans. Inf. Theory 59 (9) (2013)
Roope Vehkalahti
Remarks on criteria for achieving the optimal diversity-multiplexing gain trade-off. CoRR (2013)
Roope Vehkalahti, Camilla Hollanti, Frédérique E. Oggier
Fast-Decodable Asymmetric Space-Time Codes From Division Algebras. IEEE Trans. Inf. Theory 58 (4) (2012)
Roope Vehkalahti, Laura Luzzi
Connecting DMT of division algebra space-time codes and point counting in Lie groups. ISIT (2012)
Toni Ernvall, Roope Vehkalahti
Construction of MIMO MAC codes achieving the pigeon hole bound. ISIT (2012)
Toni Ernvall, Roope Vehkalahti
Construction of MIMO MAC Codes Achieving the Pigeon Hole Bound CoRR (2012)
Camilla Hollanti, Roope Vehkalahti, Youssef Nasser
Algebraic Hybrid Satellite-Terrestrial Space-Time Codes for Digital Broadcasting in SFN CoRR (2011)
Roope Vehkalahti, Hsiao-feng Francis Lu
Diversity-multiplexing gain tradeoff: A tool in algebra? ITW (2011)
Roope Vehkalahti, Hsiao-feng Lu
An algebraic look into MAC-DMT of lattice space-time codes CoRR (2011)
Roope Vehkalahti, Hsiao-feng Lu
Diversity-multiplexing Gain Tradeoff: a Tool in Algebra? CoRR (2011)
Roope Vehkalahti, Camilla Hollanti
Reducing complexity with less than minimum delay space-time lattice codes. ITW (2011)
Roope Vehkalahti, Hsiao-feng Lu
An algebraic look into MAC-DMT of lattice space-time codes. ISIT (2011)
Roope Vehkalahti, Camilla Hollanti
A general framework for constructing fast-decodable asymmetric space-time codes. ISIT (2011)
Camilla Hollanti, Roope Vehkalahti, Youssef Nasser
Algebraic hybrid satellite-terrestrial space-time codes for digital broadcasting in SFN. SiPS (2011)
Hsiao-feng Lu, Camilla Hollanti, Roope Vehkalahti, Jyrki T. Lahtonen
DMT Optimal Codes Constructions for Multiple-Access MIMO Channel. IEEE Trans. Inf. Theory 57 (6) (2011)
Roope Vehkalahti, Hsiao-feng Lu
Inverse Determinant Sums and Connections Between Fading Channel Information Theory and Algebra CoRR (2011)
Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen, Hsiao-feng Lu
Some simple observations on MISO codes. ISITA (2010)
Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen
A family of cyclic division algebra based fast-decodable 4×2 space-time block codes. ISITA (2010)
Frédérique E. Oggier, Roope Vehkalahti, Camilla Hollanti
Fast-decodable MIDO codes from crossed product algebras. ISIT (2010)
Roope Vehkalahti, Camilla Hollanti, Frédérique E. Oggier
Fast-Decodable Asymmetric Space-Time Codes from Division Algebras CoRR (2010)
Roope Vehkalahti
The coding gain of real matrix lattices: bounds and existence results. IEEE Trans. Inf. Theory 56 (9) (2010)
Roope Vehkalahti
Some properties of Alamouti-like MISO codes. ISIT (2009)
Jyrki T. Lahtonen, Roope Vehkalahti, Hsiao-feng Lu, Camilla Hollanti, Emanuele Viterbo
On the Decay of the Determinants of Multiuser MIMO Lattice Codes CoRR (2009)
Hsiao-feng Lu, Jyrki T. Lahtonen, Roope Vehkalahti, Camilla Hollanti
Remarks on the Criteria of Constructing MIMO-MAC DMT Optimal Codes CoRR (2009)
Hsiao-feng Lu, Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen, Yi Hong, Emanuele Viterbo
New Space-Time Code Constructions for Two-User Multiple Access Channels. IEEE J. Sel. Top. Signal Process. 3 (6) (2009)
Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto
On the densest MIMO lattices from cyclic division algebras. IEEE Trans. Inf. Theory 55 (8) (2009)
Camilla Hollanti, Roope Vehkalahti, Hsiao-feng Lu
An algebraic tool for obtaining conditional non-vanishing determinants. ISIT (2009)
Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti, Emanuele Viterbo
On the algebraic structure of the Silver code: A 2 × 2 perfect space-time block code. ITW (2008)
Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti
On the densest MIMO lattices from cyclic division algebras CoRR (2007)
Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti
-Goethals-like codes with block size 7 and 8. Finite Fields Their Appl. 13 (4) (2007)
Roope Vehkalahti
Constructing Optimal Division Algebras for Space-Time Coding. ITW (2007)
Jyrki T. Lahtonen, Roope Vehkalahti
Dense MIMO Matrix Lattices - A Meeting Point for Class Field Theory and Invariant Theory. AAECC (2007)
Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti
Optimal Matrix Lattices for MIMO Codes from Division Algebras. ISIT (2006)
Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti
-Goethals-Like Codes and Variants of Cyclotomic Polynomials. WCC (2005)