TY - JOUR
T1 - Runtime Precoding: Enabling Multipoint Transmission in LTE-Advanced System-Level Simulations
AU - Taranetz, Martin
AU - Blazek, Thomas
AU - Kropfreiter, Thomas
AU - Müller, Martin Klaus
AU - Schwarz, Stefan
AU - Rupp, Markus
PY - 2015/1/1
Y1 - 2015/1/1
N2 - System-level simulations have become an indispensable tool for predicting the behavior of wireless cellular systems. As exact link-level modeling is unfeasible due to its huge complexity, mathematical abstraction is required to obtain equivalent results by less complexity. A particular problem in such approaches is the modeling of multiple coherent transmissions. Those arise in multiple-input-multiple-output transmissions at every base station but nowadays so-called coordinated multipoint (CoMP) techniques have become very popular, allowing to allocate two or more spatially separated transmission points. Also, multimedia broadcast single frequency networks (MBSFNs) have been introduced recently in long-term evolution (LTE), which enables efficient broadcasting transmission suitable for spreading information that has a high user demand as well as simultaneously sending updates to a large number of devices. This paper introduces the concept of runtime-precoding, which allows to accurately abstract many coherent transmission schemes while keeping additional complexity at a minimum. We explain its implementation and advantages. For validation, we incorporate the runtime-precoding functionality into the Vienna LTE-A downlink system-level simulator, which is an open source tool, freely available under an academic noncommercial use license. We measure simulation run times and compare them against the legacy approach as well as link-level simulations. Furthermore, we present multiple application examples in the context of intrasite and intersite CoMP for train communications and MBSFN.
AB - System-level simulations have become an indispensable tool for predicting the behavior of wireless cellular systems. As exact link-level modeling is unfeasible due to its huge complexity, mathematical abstraction is required to obtain equivalent results by less complexity. A particular problem in such approaches is the modeling of multiple coherent transmissions. Those arise in multiple-input-multiple-output transmissions at every base station but nowadays so-called coordinated multipoint (CoMP) techniques have become very popular, allowing to allocate two or more spatially separated transmission points. Also, multimedia broadcast single frequency networks (MBSFNs) have been introduced recently in long-term evolution (LTE), which enables efficient broadcasting transmission suitable for spreading information that has a high user demand as well as simultaneously sending updates to a large number of devices. This paper introduces the concept of runtime-precoding, which allows to accurately abstract many coherent transmission schemes while keeping additional complexity at a minimum. We explain its implementation and advantages. For validation, we incorporate the runtime-precoding functionality into the Vienna LTE-A downlink system-level simulator, which is an open source tool, freely available under an academic noncommercial use license. We measure simulation run times and compare them against the legacy approach as well as link-level simulations. Furthermore, we present multiple application examples in the context of intrasite and intersite CoMP for train communications and MBSFN.
KW - Downlink
KW - Wireless networks
KW - Cellular networks
KW - Predictive models
KW - System-level design
KW - Broadcasting
KW - Telecommunication services
KW - Transmission line measurements
KW - Multimedia communication
KW - 3GPP
KW - Coordinated Multipoint
KW - High-User Mobility
KW - LTE Transmission Modes
KW - LTE-A
KW - Link Abstraction
KW - Link Quality Model
KW - MIESM
KW - Multimedia Broadcast Single Frequency Networks
KW - Runtime-Precoding
KW - Vienna LTE-A Downlink Link Level Simulator
KW - Vienna LTE-A Downlink System Level Simulator
UR - https://ieeexplore.ieee.org/document/7113789/
U2 - 10.1109/access.2015.2437903
DO - 10.1109/access.2015.2437903
M3 - Article
SN - 2169-3536
VL - 3
SP - 725
EP - 736
JO - IEEE Access
JF - IEEE Access
M1 - 7113789
ER -