'K bits' diaporamas de présentation

Information Theory For Data Management

Information Theory For Data Management. Divesh Srivastava Suresh Venkatasubramanian. Motivation. -- Abstruse Goose (177). Information Theory is relevant to all of humanity. Background. Many problems in data management need precise reasoning about information content, transfer and loss

1.74k views • 150 slides

Konstantinos Kalpakis, Koustuv Dasgupta, Parag Namjoshi Presentation by Shu-Ping Lin

Efficient Algorithms for Maximum Lifetime Data Gathering and Aggregation in Wireless Sensor Networks Selected from Elsevier: Computer Networks. Konstantinos Kalpakis, Koustuv Dasgupta, Parag Namjoshi Presentation by Shu-Ping Lin. Outline. Introduction The Data Gathering Problem

660 views • 65 slides

CIS 203

CIS 203. 14 : Data Link Control. Flow Control. Ensuring the sending entity does not overwhelm the receiving entity Preventing buffer overflow Transmission time Time taken to emit all bits into medium Propagation time Time for a bit to traverse the link.

573 views • 47 slides

Coding and Error Control

Coding and Error Control. Chapter 8. Coping with Data Transmission Errors. Error detection codes Detects the presence of an error Automatic repeat request (ARQ) protocols Block of data with error is discarded Transmitter retransmits that block of data

518 views • 37 slides

Advantages of Digital Broadcasting

Advantages of Digital Broadcasting. Better signal to noise ratio Reduced interference Possible single frequency networks Less multipath distortion Automatic tuning Auxiliary data services. DRM - Digital Radio Mondiale.

902 views • 34 slides

Advantages of Digital Broadcasting

Advantages of Digital Broadcasting. Better signal to noise ratio Reduced interference Possible single frequency networks Less multipath distortion Automatic tuning Auxiliary data services. DRM - Digital Radio Mondiale.

557 views • 34 slides

CS222

Week 2 - Wednesday. CS222. Last time. What did we talk about last time? C compilation model Lab 1. Questions?. Project 1. Quotes. Unity can only be manifested by the Binary. Unity itself and the idea of Unity are already two. Buddha. Base 10 (decimal) numbers.

475 views • 34 slides

S.72-227 Digital Communication Systems

S.72-227 Digital Communication Systems. Convolutional Codes. Targets today. Why to apply convolutional coding? Defining convolutional codes Practical encoding circuits Defining quality of convolutional codes Decoding principles Viterbi decoding. input bit. n(L+1) output bits. k bits.

564 views • 26 slides

William Stallings Data and Computer Communications 7 th Edition

William Stallings Data and Computer Communications 7 th Edition. Chapter 7 Data Link Control Protocols. Flow Control. Ensuring the sending entity does not overwhelm the receiving entity Preventing buffer overflow Transmission time Time taken to emit all bits into medium Propagation time

333 views • 26 slides

Cryptography

360 views • 25 slides

Hierarchical Cooperation Achieves Linear Scaling in Ad Hoc Wireless Networks

Hierarchical Cooperation Achieves Linear Scaling in Ad Hoc Wireless Networks. David Tse Wireless Foundations U.C. Berkeley MIT LIDS May 7, 2007 Joint work with Ayfer Ozgur and Olivier Leveque at EPFL. TexPoint fonts used in EMF: A A A A A A A A A A. Scaling of Ad Hoc Wireless Networks.

436 views • 22 slides

Attacks and improvements to an RIFD mutual authentication protocol and its extensions

Attacks and improvements to an RIFD mutual authentication protocol and its extensions. Shanti Bramhacharya and Nick McCarty. Introduction. This paper deals with the vulnerability of RFIDs

263 views • 18 slides

Section 7: Memory and Caches

Section 7: Memory and Caches. Cache basics Principle of locality Memory hierarchies Cache organization Program optimizations that consider caches. 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111. Index. Data. 00 01 10 11.

256 views • 13 slides