scholarly journals Modeling and Performance prediction of Eureka-147 OFDM based DAB system

2012 ◽  
pp. 83-88
Author(s):  
Arun Agarwal ◽  
Sarat Kumar Patra
Keyword(s):  
High Performance ◽  
Forward Error Correction ◽  
Multipath Fading ◽  
Mobile Environment ◽  
Digital Radio ◽  
Radio System ◽  
Radio Broadcasting ◽  
And Performance ◽  
Forward Error ◽  
Coded Ofdm

The new digital radio system DAB (Digital Audio Broadcasting), developed within the Eureka 147 project is a very innovative and universal multimedia broadcast system that has the potential to replace existing AM and FM audio broadcast services in many parts of the world in the near future. DAB employs coded OFDM technology that enables it for mobile reception and makes receivers highly robust against channel multipath fading effect. In this paper, we have analyzed the bit error rate (BER) performance of DAB system conforming to the parameters established by the ETSI (EN 300 401) using frequency interleaving and Forward Error Correction (FEC) in different transmission channels. The results shows DAB to be suitable radio broadcasting technology for high performance in mobile environment.

Performance Prediction of Eureka-147 DAB System Using Interleaving and Different Coding Rates

2011 ◽  
Vol 403-408 ◽  
pp. 4119-4125 ◽  
Author(s):  
Arun Agarwal ◽  
S.K. Patra
Keyword(s):  
Performance Prediction ◽  
Forward Error Correction ◽  
Multipath Fading ◽  
Digital Audio ◽  
Mobile Environment ◽  
Ancillary Data ◽  
Radio Broadcasting ◽  
Receiver Complexity ◽  
Forward Error ◽  
Coded Ofdm

Radio broadcasting technology has evolved rapidly over the last few years due to ever increasing demands for as high quality sound services with ancillary data transmission in mobile environment. The Eureka-147 Digital Audio Broadcasting (DAB) system with coded OFDM technology accomplish this demand by making receivers highly robust against effects of multipath fading environment. In this paper, we have analyzed the performance of DAB system conforming to the parameters established by the ETSI (EN 300 401) using frequency interleaving and different coding rates in different transmission channels. The results show that interleaving is essential for the forward error correction to work properly and an increased coding rate makes the system more flexible without increase in the receiver complexity.

Performance Analysis of OFDM Based DAB Systems Using Concatenated Coding Technique

2011 ◽  
Vol 403-408 ◽  
pp. 105-113 ◽  
Author(s):  
Arun Agarwal ◽  
S.K. Patra
Keyword(s):  
Channel Coding ◽  
Multipath Fading ◽  
Digital Audio ◽  
Mobile Environment ◽  
Concatenated Coding ◽  
Convolutional Coding ◽  
Digital Audio Broadcasting ◽  
Radio Broadcasting ◽  
Coding Method ◽  
Coded Ofdm

Radio broadcasting technology in this era of compact disc is expected to deliver high quality audio programmes in mobile environment. The Eureka-147 Digital Audio Broadcasting (DAB) system with coded OFDM technology accomplish this demand by making receivers highly robust against effects of multipath fading environment. In this paper, we have analyzed the performance of DAB system conforming to the parameters established by the ETSI (EN 300 401) using time and frequency interleaving, concatenated Bose-Chaudhuri-Hocquenghem coding and convolutional coding method in different transmission channels. The results show that concatenated channel coding improves the system performance compared to convolutional coding.

scholarly journals A VLSI Design for the LTE Turbo Decoder

2012 ◽  
Vol 7 (1) ◽  
pp. 16-22
Author(s):  
Ilan Schnitman Souza ◽  
V. T. Dos Reis
Keyword(s):  
Turbo Codes ◽  
High Performance ◽  
Forward Error Correction ◽  
Vlsi Design ◽  
Turbo Decoder ◽  
Wireless Telecommunications ◽  
And Performance ◽  
Window Approach ◽  
High Level ◽  
Forward Error

Due to the need of high performance, new wireless telecommunications standards such asWIMAX and LTE are using turbo-codes as a forward error correction (FEC) choice.This design targets either a self-contained IP (Intellectual Property) or integration into the physical layer project. This work presents all steps for the implementation of an LTE standard turbo decoder: from algorithm modeling in high level programming language to architecture using a sliding window approach seeking throughput needed, getting into physical implementation at TSMC 65nm. Each aspect of the specification and performance were analyzed in their proper stages.

Mobile Platform Challenges in Interactive Computer Vision

2017 ◽  
pp. 47-73
Author(s):  
Miguel Bordallo López
Keyword(s):  
Computer Vision ◽  
Energy Efficiency ◽  
User Interfaces ◽  
High Performance ◽  
Heterogeneous Computing ◽  
Low Power Consumption ◽  
Mobile Environment ◽  
Trade Off ◽  
And Performance ◽  
Important Design

Computer vision can be used to increase the interactivity of existing and new camera-based applications. It can be used to build novel interaction methods and user interfaces. The computing and sensing needs of this kind of applications require a careful balance between quality and performance, a practical trade-off. This chapter shows the importance of using all the available resources to hide application latency and maximize computational throughput. The experience gained during the developing of interactive applications is utilized to characterize the constraints imposed by the mobile environment, discussing the most important design goals: high performance and low power consumption. In addition, this chapter discusses the use of heterogeneous computing via asymmetric multiprocessing to improve the throughput and energy efficiency of interactive vision-based applications.

Characteristics of a High Capacity 16 QAM Digital Radio System in Multipath Fading

1979 ◽  
Vol 27 (12) ◽  
pp. 1854-1861 ◽  
Author(s):  
S. Komaki ◽  
I. Horikawa ◽  
K. Morita ◽  
Y. Okamoto
Keyword(s):  
High Capacity ◽  
Multipath Fading ◽  
Digital Radio ◽  
Radio System

scholarly journals Dynamic PL&T using Two Reference Nodes Equipped with Steered Directional Antenna for Significant PL&T Accuracy

2012 ◽  
Vol 4 (4) ◽  
pp. 40-53 ◽  
Author(s):  
Niraj Shakhakarmi ◽  
Dhadesugoor R. Vaman
Keyword(s):  
Forward Error Correction ◽  
Ad Hoc ◽  
Multipath Fading ◽  
Integrated Approach ◽  
Directional Antennas ◽  
Directional Antenna ◽  
Beam Power ◽  
Tracking Accuracy ◽  
Hoc Networks ◽  
Forward Error

Dynamic Position Location and Tracking (PL&T) is proposed deploying the integrated approach of zone finding and triangulation using two friendly nodes equipped with Steered Directional Antenna (DA) in Mobile Ad hoc Networks (MANET). This approach allows the system to use only two references instead of a typical 3 references for a straight triangulation. Moreover, the performance of the proposed algorithm with references using directional antennas shows significant improvement over triangulation using references with Omni-directional antennas as the beam power is concentrated. However, dynamic switching of reference nodes is frequently required as the target moves outside the predicted zone. This paper presents a better tracking accuracy in using proposed dynamic PL&T as compared to other PL&T techniques. The multipath fading is also addressed with the use of KV transform coding technique which uses forward error correction and sample interleaving achieves greater than 90% tracking accuracy with BERs of 10-6 or better.

Trace nanoanalysis

1994 ◽  
Vol 52 ◽  
pp. 940-941
Author(s):  
D. E. Newbury ◽  
R. D. Leapman
Keyword(s):  
High Performance ◽  
Secondary Ion Mass Spectrometry ◽  
Detection Efficiency ◽  
Volume Element ◽  
And Performance ◽  
Trace Constituents ◽  
Secondary Ion ◽  
Concentration Levels ◽  
Structure Properties

Trace constituents, which can be very loosely defined as those present at concentration levels below 1 percent, often exert influence on structure, properties, and performance far greater than what might be estimated from their proportion alone. Defining the role of trace constituents in the microstructure, or indeed even determining their location, makes great demands on the available array of microanalytical tools. These demands become increasingly more challenging as the dimensions of the volume element to be probed become smaller. For example, a cubic volume element of silicon with an edge dimension of 1 micrometer contains approximately 5×1010 atoms. High performance secondary ion mass spectrometry (SIMS) can be used to measure trace constituents to levels of hundreds of parts per billion from such a volume element (e. g., detection of at least 100 atoms to give 10% reproducibility with an overall detection efficiency of 1%, considering ionization, transmission, and counting).

Sign in / Sign up

Export Citation Format

Share Document