The challenge of scheduling user transmissions on the downlink of a long-term evolution (LTE) cellular communication system

2010 ◽  
Author(s):  
Bader Alhasson ◽  
M. Matin
Keyword(s):  
Communication System ◽  
Long Term Evolution ◽  
Cellular Communication ◽  
Term Evolution

scholarly journals Multiuser Scheduling on the Downlink of an LTE Cellular System

2008 ◽  
Vol 2008 ◽  
pp. 1-4 ◽  
Author(s):  
Raymond Kwan ◽  
Cyril Leung ◽  
Jie Zhang
Keyword(s):  
Communication System ◽  
System Performance ◽  
Long Term Evolution ◽  
Cellular Communication ◽  
Feedback Information ◽  
Optimal Scheme ◽  
Term Evolution ◽  
Multiuser Scheduling ◽  
Reduced Complexity

The challenge of scheduling user transmissions on the downlink of a long-term evolution (LTE) cellular communication system is addressed. In particular, a novel optimalmultiuser scheduler is proposed. Numerical results show that the system performance improves with increasing correlation among OFDMA subcarriers. It is found that only a limited amount of feedback information is needed to achieve relatively good performance. A suboptimal reduced-complexity scheduler is also proposed and shown to provide good performance. The suboptimal scheme is especially attractive when the number of users is large, in which case the complexity of the optimal scheme is high.

scholarly journals High performance turbo encoder using mealy FSM state encoding technique

2018 ◽  
Vol 7 (3.3) ◽  
pp. 255 ◽  
Author(s):  
E Sujatha ◽  
Dr C. Subhas ◽  
Dr M. N. Giri Prasad
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Binary Data ◽  
High Speed ◽  
Long Term Evolution ◽  
Quality Data ◽  
Wireless Communication System ◽  
Term Evolution ◽  
Turbo Encoder

Error-correction Coding plays a vital role to obtain efficient and high quality data transmission, in today’s high speed wireless communication system. Considering the requirement of using high data rates by Long Term Evolution (LTE) system, parallel concatenation of two convolutional encoders were used to design turbo encoder. In this research task a high speed turbo encoder, which is a key component in the transmitter of wireless communication System, with memory based interleaver has been designed and implemented on FPGA for 3rd Generation Partnership Project (3GPP) defined Long Term Evolution – Advanced (LTE-A) standard using Finite state Machine(FSM) encoding technique. Memory based quadratic permutation polynomial (QPP) interleaver shuffles a sequence of binary data and supports any of the 188 block sizes from N= 40 to N= 6144. The proposed turbo encoder is implemented using 28nm CMOS technology and achieved 300 Mbps data rate by using 1% of available total hardware logic. By using the proposed technique, encoded data can be released continuously with the help of two parallel memories to write/read the input using pipelining concept.  

scholarly journals Averting Paging Related Attacks in 4G LTE Communication System

2019 ◽  
Vol 8 (2S4) ◽  
pp. 160-163
Keyword(s):  
Communication System ◽  
Security Analysis ◽  
Long Term Evolution ◽  
Data Rate ◽  
Security Vulnerabilities ◽  
Term Evolution ◽  
Long Time ◽  
4G Lte ◽  
Secured Communication

Long Term Evolution (LTE) objective is to provide secured communication at higher data rate for the users. It’s been long time that the technology is being consumed by the users. However, there are still security vulnerabilities that provides scope for various attacks on the network. One such scenario is that attacks related paging procedure itself. This paper discusses about the possible attacks related to paging and how these attacks affect the security of the network and also propose a scheme to avert these attacks by leveraging the existing LTE communication system and also the simulation of the proposed scheme with the security analysis of the same

Link-Level Simulator for Wireless local Area Network

2018 ◽  
Vol 6 (7) ◽  
pp. 314
Author(s):  
Chaithra. H. U ◽  
Vani H.R
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Local Area ◽  
Long Term Evolution ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Network Simulator ◽  
Term Evolution

Now a days in Wireless Local Area Networks (WLANs) used in different fields because its well-suited simulator and higher flexibility. The concept of WLAN  with  advanced 5th Generation technologies, related to a Internet-of-Thing (IOT). In this project, representing the Network Simulator (NS-2) used linked-level simulators for Wireless Local Area Networks and still utilized IEEE 802.11g/n/ac with advanced IEEE 802.11ah/af technology. Realization of the whole Wireless Local Area Networking linked-level simulators inspired by the recognized Vienna Long Term Evolution- simulators. As a outcome, this is achieved to link together that simulator to detailed performances of Wireless Local Area Networking with Long Term Evolution, operated in the similar RF bands. From the advanced 5th Generation support cellular networking, such explore is main because different coexistences scenario can arise linking wireless communicating system to the ISM and UHF bands.

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