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ORCIDRoope Vehkalahti
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2020 – today
- 2023
[j15]Jialing Liao
, Roope Vehkalahti, Tefjol Pllaha, Wei Han, Olav Tirkkonen:
Modular CSI Quantization for FDD Massive MIMO Communication. IEEE Trans. Wirel. Commun. 22(12): 8543-8558 (2023)- [i29]Jialing Liao, Roope Vehkalahti, Tefjol Pllaha, Wei Han, Olav Tirkkonen:
Modular CSI Quantization for FDD Massive MIMO Communication. CoRR abs/2303.13264 (2023) - 2022
- [j14]Charles Grover, Andrew Mendelsohn, Cong Ling, Roope Vehkalahti:
Non-commutative Ring Learning with Errors from Cyclic Algebras. J. Cryptol. 35(3): 22 (2022) - [j13]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): 2999-3013 (2022) - [c34]Jari Lietzén, Olav Tirkkonen, Roope Vehkalahti:
Secret Keys from Parity Bits in the Satellite Setting. ISIT 2022: 2672-2677 - [i28]Radoslaw Kotaba, Roope Vehkalahti, Cedomir Stefanovic, Olav Tirkkonen, Petar Popovski:
Deterministic Patterns for Multiple Access in Latency-Constrained Ultra-Reliable Communications. CoRR abs/2202.09890 (2022) - 2021
- [c33]Roope Vehkalahti, Tefjol Pllaha, Olav Tirkkonen:
Signature Code Design for Fast Fading Channels. ISIT 2021: 2936-2941 - [c32]Roope Vehkalahti, Jialing Liao, Tefjol Pllaha, Wei Han, Olav Tirkkonen:
CSI Quantization for FDD Massive MIMO Communication. VTC Spring 2021: 1-5 - [c31]Roope Vehkalahti, Tefjol Pllaha, Olav Tirkkonen:
Towards Ultra-Reliable Signature Coding With Multiple Transmit Antennas. VTC Spring 2021: 1-5 - [i27]Roope Vehkalahti, Laura Luzzi:
The DMT of Real and Quaternionic Lattice Codes and DMT Classification of Division Algebra Codes. CoRR abs/2102.09910 (2021) - 2020
- [c30]Jari Lietzén, Roope Vehkalahti, Olav Tirkkonen:
A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER. ISIT 2020: 1106-1111 - [i26]Charles Grover, Cong Ling, Roope Vehkalahti:
Non-Commutative Ring Learning With Errors From Cyclic Algebras. CoRR abs/2008.01834 (2020)
2010 – 2019
- 2019
- [c29]Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen, Antti Laaksonen:
Code Design Principles for Ultra-Reliable Random Access with Preassigned Patterns. ISIT 2019: 2604-2608 - [i25]Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen, Antti Laaksonen:
Code Design Principles for Ultra-Reliable Random Access with Preassigned Patterns. CoRR abs/1905.02761 (2019) - [i24]Laura Luzzi, Roope Vehkalahti, Cong Ling:
Almost universal codes for MIMO wiretap channels. IACR Cryptol. ePrint Arch. 2019: 1171 (2019) - 2018
- [j12]Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen:
Interference Cancelling Codes for Ultra-Reliable Random Access. Int. J. Wirel. Inf. Networks 25(4): 422-433 (2018) - [j11]Laura Luzzi, Roope Vehkalahti, Cong Ling:
Almost Universal Codes for MIMO Wiretap Channels. IEEE Trans. Inf. Theory 64(11): 7218-7241 (2018) - [c28]Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen:
Grant-Free Access in URLLC with Combinatorial Codes and Interference Cancellation. GLOBECOM Workshops 2018: 1-5 - [c27]Laura Luzzi, Roope Vehkalahti:
The DMT Classification of Real and Quaternionic Lattice Codes. ISIT 2018: 1026-1030 - [i23]Laura Luzzi, Roope Vehkalahti:
The DMT classification of real and quaternionic lattice codes. CoRR abs/1801.02913 (2018) - 2017
- [j10]Laura Luzzi, Roope Vehkalahti:
Almost Universal Codes Achieving Ergodic MIMO Capacity Within a Constant Gap. IEEE Trans. Inf. Theory 63(5): 3224-3241 (2017) - [c26]Olav Tirkkonen, Christopher Boyd, Roope Vehkalahti:
Grassmannian codes from multiple families of mutually unbiased bases. ISIT 2017: 789-793 - [c25]Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen:
Combinatorial code designs for ultra-reliable IoT random access. PIMRC 2017: 1-5 - [i22]Laura Luzzi, Roope Vehkalahti:
Algebraic lattice codes for linear fading channels. CoRR abs/1712.07182 (2017) - 2016
- [c24]Laura Luzzi, Roope Vehkalahti, Alexander Gorodnik:
Towards a complete DMT classification of division algebra codes. ISIT 2016: 2993-2997 - [c23]Laura Luzzi, Cong Ling, Roope Vehkalahti:
Almost universal codes for fading wiretap channels. ISIT 2016: 3082-3086 - [i21]Laura Luzzi, Cong Ling, Roope Vehkalahti:
Almost universal codes for fading wiretap channels. CoRR abs/1601.02391 (2016) - [i20]Laura Luzzi, Roope Vehkalahti, Cong Ling:
Almost universal codes for MIMO wiretap channels. CoRR abs/1611.01428 (2016) - 2015
- [j9]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): 1971-1984 (2015) - [j8]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): 5931-5947 (2015) - [c22]Roope Vehkalahti, Laura Luzzi:
Number field lattices achieve Gaussian and Rayleigh channel capacity within a constant gap. ISIT 2015: 436-440 - [c21]Laura Luzzi, Roope Vehkalahti:
Division algebra codes achieve MIMO block fading channel capacity within a constant gap. ISIT 2015: 446-450 - [i19]Roope Vehkalahti, Laura Luzzi:
Estimates for the growth of inverse determinant sums of quasi-orthogonal and number field lattices. CoRR abs/1501.01773 (2015) - [i18]Laura Luzzi, Roope Vehkalahti:
Almost universal codes achieving ergodic MIMO capacity within a constant gap. CoRR abs/1507.07395 (2015) - [i17]Laura Luzzi, Roope Vehkalahti, Alexander Gorodnik:
Towards a complete DMT classification of division algebra codes. CoRR abs/1509.08254 (2015) - 2014
- [c20]Roope Vehkalahti, Wittawat Kositwattanarerk, Frédérique E. Oggier:
Constructions a of lattices from number fields and division algebras. ISIT 2014: 2326-2330 - [c19]Roope Vehkalahti, Laura Luzzi, Jean-Claude Belfiore:
Shifted inverse determinant sums and new bounds for the DMT of space-time lattice codes. ISIT 2014: 2331-2335 - [i16]Roope Vehkalahti, Laura Luzzi, Jean-Claude Belfiore:
Shifted inverse determinant sums and new bounds for the DMT of space-time lattice codes. CoRR abs/1408.1506 (2014) - [i15]Benjamin Linowitz, Matthew Satriano, Roope Vehkalahti:
A non-commutative analogue of the Odlyzko bounds and bounds on performance for space-time lattice codes. CoRR abs/1408.4630 (2014) - [i14]Roope Vehkalahti, Laura Luzzi:
Number field lattices achieve Gaussian and Rayleigh channel capacity within a constant gap. CoRR abs/1411.4591 (2014) - [i13]Laura Luzzi, Roope Vehkalahti:
Division algebra codes achieve MIMO block fading channel capacity within a constant gap. CoRR abs/1412.7650 (2014) - 2013
- [j7]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): 6060-6082 (2013) - [c18]Laura Luzzi, Roope Vehkalahti:
A new design criterion for spherically-shaped division algebra-based space-time codes. ITW 2013: 1-5 - [i12]Roope Vehkalahti:
Remarks on criteria for achieving the optimal diversity-multiplexing gain trade-off. CoRR abs/1308.3985 (2013) - [i11]Laura Luzzi, Roope Vehkalahti:
A new design criterion for spherically-shaped division algebra-based space-time codes. CoRR abs/1309.3901 (2013) - [i10]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 abs/1312.4692 (2013) - 2012
- [j6]Roope Vehkalahti, Camilla Hollanti, Frédérique E. Oggier:
Fast-Decodable Asymmetric Space-Time Codes From Division Algebras. IEEE Trans. Inf. Theory 58(4): 2362-2385 (2012) - [c17]Toni Ernvall, Roope Vehkalahti:
Construction of MIMO MAC codes achieving the pigeon hole bound. ISIT 2012: 21-25 - [c16]Roope Vehkalahti, Laura Luzzi:
Connecting DMT of division algebra space-time codes and point counting in Lie groups. ISIT 2012: 3038-3042 - [i9]Toni Ernvall, Roope Vehkalahti:
Construction of MIMO MAC Codes Achieving the Pigeon Hole Bound. CoRR abs/1202.0675 (2012) - 2011
- [j5]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): 3594-3617 (2011) - [c15]Roope Vehkalahti, Camilla Hollanti:
A general framework for constructing fast-decodable asymmetric space-time codes. ISIT 2011: 2821-2825 - [c14]Roope Vehkalahti, Hsiao-feng Lu:
An algebraic look into MAC-DMT of lattice space-time codes. ISIT 2011: 2831-2835 - [c13]Roope Vehkalahti, Camilla Hollanti:
Reducing complexity with less than minimum delay space-time lattice codes. ITW 2011: 130-134 - [c12]Roope Vehkalahti, Hsiao-feng Francis Lu:
Diversity-multiplexing gain tradeoff: A tool in algebra? ITW 2011: 135-139 - [c11]Camilla Hollanti, Roope Vehkalahti, Youssef Nasser:
Algebraic hybrid satellite-terrestrial space-time codes for digital broadcasting in SFN. SiPS 2011: 234-238 - [i8]Camilla Hollanti, Roope Vehkalahti, Youssef Nasser:
Algebraic Hybrid Satellite-Terrestrial Space-Time Codes for Digital Broadcasting in SFN. CoRR abs/1103.0484 (2011) - [i7]Roope Vehkalahti, Hsiao-feng Lu:
An algebraic look into MAC-DMT of lattice space-time codes. CoRR abs/1105.2114 (2011) - [i6]Roope Vehkalahti, Hsiao-feng Lu:
Diversity-multiplexing Gain Tradeoff: a Tool in Algebra? CoRR abs/1105.3569 (2011) - [i5]Roope Vehkalahti, Hsiao-feng Lu:
Inverse Determinant Sums and Connections Between Fading Channel Information Theory and Algebra. CoRR abs/1111.6289 (2011) - 2010
- [j4]Roope Vehkalahti:
The coding gain of real matrix lattices: bounds and existence results. IEEE Trans. Inf. Theory 56(9): 4359-4366 (2010) - [c10]Frédérique E. Oggier, Roope Vehkalahti, Camilla Hollanti:
Fast-decodable MIDO codes from crossed product algebras. ISIT 2010: 1080-1084 - [c9]Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen:
A family of cyclic division algebra based fast-decodable 4×2 space-time block codes. ISITA 2010: 42-47 - [c8]Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen, Hsiao-feng Lu:
Some simple observations on MISO codes. ISITA 2010: 537-541 - [i4]Roope Vehkalahti, Camilla Hollanti, Frédérique E. Oggier:
Fast-Decodable Asymmetric Space-Time Codes from Division Algebras. CoRR abs/1010.5644 (2010)
2000 – 2009
- 2009
- [j3]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): 939-957 (2009) - [j2]Roope Vehkalahti, Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto:
On the densest MIMO lattices from cyclic division algebras. IEEE Trans. Inf. Theory 55(8): 3751-3780 (2009) - [c7]Roope Vehkalahti:
Some properties of Alamouti-like MISO codes. ISIT 2009: 914-918 - [c6]Camilla Hollanti, Roope Vehkalahti, Hsiao-feng Lu:
An algebraic tool for obtaining conditional non-vanishing determinants. ISIT 2009: 1388-1392 - [i3]Jyrki T. Lahtonen, Roope Vehkalahti, Hsiao-feng Lu, Camilla Hollanti, Emanuele Viterbo:
On the Decay of the Determinants of Multiuser MIMO Lattice Codes. CoRR abs/0908.2505 (2009) - [i2]Hsiao-feng Lu, Jyrki T. Lahtonen, Roope Vehkalahti, Camilla Hollanti:
Remarks on the Criteria of Constructing MIMO-MAC DMT Optimal Codes. CoRR abs/0908.3166 (2009) - 2008
- [c5]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: 91-94 - 2007
- [j1]Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti:
3-Designs from all Z4-Goethals-like codes with block size 7 and 8. Finite Fields Their Appl. 13(4): 815-827 (2007) - [c4]Jyrki T. Lahtonen, Roope Vehkalahti:
Dense MIMO Matrix Lattices - A Meeting Point for Class Field Theory and Invariant Theory. AAECC 2007: 247-256 - [c3]Roope Vehkalahti:
Constructing Optimal Division Algebras for Space-Time Coding. ITW 2007: 1-5 - [i1]Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti:
On the densest MIMO lattices from cyclic division algebras. CoRR abs/cs/0703052 (2007) - 2006
- [c2]Camilla Hollanti, Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti:
Optimal Matrix Lattices for MIMO Codes from Division Algebras. ISIT 2006: 783-787 - 2005
- [c1]Jyrki T. Lahtonen, Kalle Ranto, Roope Vehkalahti:
3-Designs from Z4-Goethals-Like Codes and Variants of Cyclotomic Polynomials. WCC 2005: 55-68
Coauthor Index
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