Open AccessProceedings Article
Implementation Aspects of Channel Estimation for 3GPP LTE Terminals
Michal Simko,Di Wu,Christian Mehlfuehrer,Johan Eilert,Dake Liu +4 more
- pp 1-5
TLDR
A channel estimation ASIC, which handles the real-time channel estimation, is presented, which boosts the throughput at feasible silicon cost by adopting a recently proposed estimation method named Approximate Linear Minimum Mean Square Error (ALMMSE).Abstract:
In this paper, hardware implementation aspects of the channel estimator in 3GPP LTE terminals are investigated. A channel estimation ASIC, which handles the real-time channel estimation, is presented. Compared to traditional correlator-based channel estimators, the channel estimator presented boosts the throughput at feasible silicon cost by adopting a recently proposed estimation method named Approximate Linear Minimum Mean Square Error (ALMMSE). In this paper, both the architecture and VLSI implementation of the estimator are elaborated. Implemented using a 65nm CMOS process, the channel estimator supports the full 20MHz bandwidth of 3GPP LTE and consumes only 49 kgates.read more
Citations
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IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems Draft Amendment: Management Information Base Extensions
TL;DR: In this paper, the authors provide updates to IEEE 802.16's MIB for the MAC, PHY and asso-ciated management procedures in order to accommodate recent extensions to the standard.
Journal ArticleDOI
Large-Scale MIMO Detection for 3GPP LTE: Algorithms and FPGA Implementations
TL;DR: This work proposes a new approximate matrix inversion algorithm relying on a Neumann series expansion, which substantially reduces the complexity of linear data detection in single-carrier frequency-division multiple access (SC-FDMA)-based large-scale MIMO systems.
Journal ArticleDOI
The Vienna LTE simulators - Enabling reproducibility in wireless communications research
Christian Mehlfuhrer,Josep Colom Ikuno,Michal Simko,Stefan Schwarz,Martin Wrulich,Markus Rupp +5 more
TL;DR: This study explains how link and system level simulations are connected and shows how the link level simulator serves as a reference to design the system level simulator, and compares the accuracy of the PHY modeling at system level by means of simulations performed both with bit-accurate link level simulations and PHY-model-based systemlevel simulations.
Journal ArticleDOI
A Tutorial on NB-IoT Physical Layer Design
TL;DR: This article addresses the Release 13 of the NB-IoT 3rd generation partnership project (3GPP) standardized LPWA technology and provides a tutorial on its physical layer (PHY) design and discusses the characteristics and the scheduling of downlink and uplink physical channels at theNB- IoT base station side and the user equipment (UE) side.
Proceedings ArticleDOI
A 3.8Gb/s large-scale MIMO detector for 3GPP LTE-Advanced
TL;DR: This paper proposes - to the best of the knowledge - the first ASIC design for high-throughput data detection in single carrier frequency division multiple access (SC-FDMA)-based large-scale MIMO systems, such as systems building on future 3GPP LTE-Advanced standards.
References
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IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems Draft Amendment: Management Information Base Extensions
TL;DR: In this paper, the authors provide updates to IEEE 802.16's MIB for the MAC, PHY and asso-ciated management procedures in order to accommodate recent extensions to the standard.
Proceedings ArticleDOI
Simulating the Long Term Evolution physical layer
TL;DR: This paper presents a MATLAB-based downlink physical-layer simulator for LTE that can efficiently be executed on multi-core processors to significantly reduce the simulation time.
Proceedings ArticleDOI
On 3G LTE Terminal Implementation - Standard, Algorithms, Complexities and Challenges
TL;DR: It is shown that the inner receiver can nicely and straightforwardly be parallelized due to frequency domain processing, and one of the challenges is an efficient implementation considering necessary flexibility for different MIMO modes, power consumption and silicon area.
Journal ArticleDOI
A Real-Time 4-Stream MIMO-OFDM Transceiver: System Design, FPGA Implementation, and Characterization
S. Haene,D. Perels,Andreas Burg +2 more
TL;DR: This paper presents a real-time FPGA prototype for a 4-stream MIMO-OFDM transceiver capable of transmitting 216 Mbit/s in 20 MHz bandwidth and discusses the initial parameter estimation, channel estimation, MIMo detection, parameter tracking, and channel decoding.
Proceedings ArticleDOI
Carrier frequency synchronization in the downlink of 3GPP LTE
TL;DR: Compared to perfect synchronization, the presented maximum likelihood estimator shows hardly any performance loss, even when the most sophisticated MIMO schemes of LTE are employed.