scholarly journals A Software-Defined Radio for Future Wireless Communication Systems at 60 GHz

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1490 ◽  
Author(s):  
Luis Duarte ◽  
Rodolfo Gomes ◽  
Carlos Ribeiro ◽  
Rafael F. S. Caldeirinha
Keyword(s):  
Real Time ◽  
Performance Indicators ◽  
Software Defined Radio ◽  
Communication Systems ◽  
Wireless Communication Systems ◽  
Processing Unit ◽  
60 Ghz ◽  
Video Content ◽  
Transmission Scheme ◽  
Unit Design

This paper reports on a complete end-to-end 5G mmWave testbed fully reconfigurable based on a FPGA architecture. The proposed system is composed of a baseband/low-IF processing unit, and a mmWave RF front-end at both TX/RX ends. In particular, the baseband unit design is based on a typical agile digital IF architecture, enabling on-the-fly modulations up to 256-QAM. The real-time 5G mmWave testbed, herein presented, adopts OFDM as the transmission scheme waveform, which was assessed OTA by considering the key performance indicators, namely EVM and BER. A detailed overview of system architecture is addressed together with the hardware considerations taken into account for the mmWave testbed development. Following this, it is demonstrated that the proposed testbed enables real-time multi-stream transmissions of UHD video content captured by nine individual cameras, which is in fact one of the killing applications for 5G.

scholarly journals A Hybrid PAPR Reduction Method Based on SLM and Multi-Data Block PTS for FBMC/OQAM Systems

Information ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 246 ◽  
Author(s):  
Han Wang
Keyword(s):  
Communication Systems ◽  
Filter Bank ◽  
Reduction Method ◽  
Average Power ◽  
Data Block ◽  
Papr Reduction ◽  
Wireless Communication Systems ◽  
Transmission Scheme ◽  
Filter Bank Multicarrier ◽  
Selective Mapping

The filter bank multicarrier employing offset quadrature amplitude modulation (FBMC/OQAM) is a candidate transmission scheme for 5G wireless communication systems. However, it has a high peak-to-average power ratio (PAPR). Due to the nature of overlapped signal structure of FBMC/OQAM, conventional PAPR reduction schemes cannot work effectively. A hybrid PAPR reduction scheme based on selective mapping (SLM) and multi data block partial transmit sequence (M-PTS) methods is proposed for FBMC/OQAM signals in this paper. Different from the simple SLM-PTS method, the proposed hybrid algorithm takes into account the overlapping effect of multiple adjacent data blocks on its PTS process. From simulation results, it can be obtained that the proposed method can offer a significant PAPR reduction performance improvement compared with the SLM, PTS and SLM-PTS methods. The proposed method can effectively reduce the PAPR in FBMC/OQAM systems.

scholarly journals Real-Time Monte Carlo Optimization on FPGA for the Efficient and Reliable Message Chain Structure

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 866 ◽  
Author(s):  
Heoncheol Lee ◽  
Kipyo Kim
Keyword(s):  
Monte Carlo ◽  
Real Time ◽  
Communication Systems ◽  
Optimization Method ◽  
Chain Structure ◽  
Processing Unit ◽  
Monte Carlo Optimization ◽  
Central Processing ◽  
Field Programmable ◽  
Programmable Gate Arrays

This paper addresses the real-time optimization problem to find the most efficient and reliable message chain structure in data communications based on half-duplex command–response protocols such as MIL-STD-1553B communication systems. This paper proposes a real-time Monte Carlo optimization method implemented on field programmable gate arrays (FPGA) which can not only be conducted very quickly but also avoid the conflicts with other tasks on a central processing unit (CPU). Evaluation results showed that the proposed method can consistently find the optimal message chain structure within a quite small and deterministic time, which was much faster than the conventional Monte Carlo optimization method on a CPU.

Efficient Configurations for Dynamic Applications in Next Generation Mobile Systems

2016 ◽  
pp. 112-147 ◽  
Author(s):  
Nikolaos Zompakis ◽  
Francky Catthoor ◽  
D. Soudris
Keyword(s):  
Software Defined Radio ◽  
Communication Systems ◽  
Wireless Systems ◽  
Mobile Systems ◽  
Wireless Communication Systems ◽  
Next Generation ◽  
Performance Requirements ◽  
Wide Range ◽  
System Configurations ◽  
Design Challenges

Next generation wireless systems support a wide range of communication protocols and services, opening new design challenges. The desired flexibility presupposes effective approaches that exploit the system configurations with an optimal way. A well-known state-of-the-art example of a wireless platform is the Software Defined Radio (SDR). SDRs are characterized by strict performance requirements that introduce a lot of dynamism in respect with the resource utilization. Additionally, these devices experience transient overloads due to workload bursts or hardware malfunctions. The aforementioned reasons lead the system to take timely reactions to unexpected usage scenarios. The current chapter concentrates on these design challenges exploiting the system scenario methodology, proposing solutions especially for wireless communication systems. More precisely, it will be studied the tradeoffs between the representativeness of the scenarios (clustering overhead), the implementation of the scenario detection (detection overhead) and the platform tuning cost (switching overhead).

Capacity of 60 GHz Wireless Communication Systems over Fading Channels

2012 ◽  
Vol 7 (1) ◽  
Author(s):  
Jingjing Wang ◽  
Hao Zhang ◽  
Tingting Lv ◽  
T. Aaron Gulliver
Keyword(s):  
Wireless Communication ◽  
Fading Channels ◽  
Communication Systems ◽  
Wireless Communication Systems ◽  
60 Ghz
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