Advanced Wireless LAN by Song Guo

By Song Guo

This booklet offers many of the newest improvement prestige of instant LAN, masking the themes on actual layer, MAC layer, QoS and structures. It offers a chance for either practitioners and researchers to discover the issues that come up within the speedily built applied sciences in instant LAN.

The earlier 20 years have witnessed starling advances in instant LAN applied sciences that have been prompted by way of its expanding reputation in the house as a result of ease of install, and in advertisement complexes providing instant entry to their customers.

Contents
Preface
1 Sum-Product deciphering of Punctured Convolutional Code for instant LAN
2 A MAC Throughput within the instant LAN
3 MAC-Layer QoS overview Metrics for IEEE 802.11e-EDCF Protocol over Nodes' Mobility Constraints
4 ideas for conserving QoS functionality in Contention-Based IEEE 802.11e Networks
5 QoS variation for knowing interplay among digital and genuine Worlds via instant LAN
6 customized CMOS picture Sensor with Multi-Channel High-Speed Readout devoted to WDM-SDM Indoor Optical instant LAN

with TOC BookMarkLinks

Show description

Read or Download Advanced Wireless LAN PDF

Similar internet & networking books

Building the Global Fiber Optics Superhighway

A re-working of C. D. Chaffee's formerly released The Rewiring of the US (Academia, 1988), this specialist publication describes the fiber optics revolution. there were many adjustments in the fiber optics box because the book's first book. those comprise advances in optical networking; the extra bandwidth created by way of the net and linked information companies; liberalization of the worldwide telecommunications undefined; and the rewiring of the world's oceans with fiber optics.

Introduction to Reliable and Secure Distributed Programming

In sleek computing a software is generally disbursed between a number of methods. the elemental problem while constructing trustworthy and safe allotted courses is to help the cooperation of techniques required to execute a typical job, even if a few of these tactics fail. disasters may possibly variety from crashes to opposed assaults by means of malicious techniques.

Cognitive Resource Management for Heterogeneous Cellular Networks

This Springer short specializes in cognitive source administration in heterogeneous mobile networks (Het web) with small mobilephone deployment for the LTE-Advanced method. It introduces the Het internet beneficial properties, provides functional ways utilizing cognitive radio know-how in accommodating small cellphone facts relay and optimizing source allocation and examines the effectiveness of source administration between small cells given constrained coordination bandwidth and instant channel uncertainty.

Content-Centric Networks: An Overview, Applications and Research Challenges

This publication introduces Content-Centric Networking (CCN), a networking paradigm that offers an easy and powerful approach to the tough calls for of destiny stressed and instant communications. It presents an outline of the hot advancements within the zone of destiny web applied sciences, bringing jointly the developments which have been made in Information-Centric Networking (ICN) often, with a spotlight on CCN.

Extra info for Advanced Wireless LAN

Example text

Furthermore, satellite uplink and radar stations must be secured from interference. 11h defines MAC mechanisms for DFS (Dynamic Frequency Selection) and TPC (Transmit Power Control), which we explain in the MAC section. 9 GHz and 5 GHz frequency bands. 11j is the first amendment that defines PHY operation with 10 MHz bandwidth in addition to the formerly preferred 20 MHz channelization. Coding Bits Coded Bits per Data Bits Per Per Subcarrier OFDM symbol OFDM Symbol (NCBPS) (NDBPS) (NBPSC) Data Rate (Mbits/sec) Modulation Coding Rate (R) 6 BPSK 1/2 1 48 24 9 BPSK 3/4 1 48 36 12 QPSK 1/2 2 96 48 18 QPSK 3/4 2 96 72 24 16-QAM 1/2 4 192 96 36 16-QAM 3/4 4 192 144 48 64-QAM 2/3 6 288 192 54 64-QAM 3/4 6 288 216 Table 2.

11n products on the market feature a 40 MHz mode of operation. 11a/g waveform to 36 Advanced Wireless LAN increase the data rate. 11a/g is 3/4. 11n for an 11 percent increase in data rate. With the improvement in RF (Radio Frequency) technology, it was demonstrated that two extra frequency subcarriers could be squeezed into the guard band on each side of the spectral waveform and still meet the transmit spectral mask. 11a/g. 11n contains an 800 ns guard interval between each OFDM symbol. An optional mode was defined with a 400 ns guard interval between each OFDM symbol to increase the data rates by another 11 percent.

One-level frame aggregation: a) A-MSDU; b) A-MPDU [10] A-MSDU — The principle of the A-MSDU (or MSDU aggregation) is to allow multiple MSDUs to be sent to the same receiver concatenated in a single MPDU. This definitely improves the efficiency of the MAC layer, specifically when there are many small MSDUs, such as TCP acknowledgments. 11n is mandatory at the receiver. For an A-MSDU to be formed, a layer at the top of the MAC receives and buffers multiple packets (MSDUs). The A-MSDU is completed either when the size of the waiting packets reaches the maximal A-MSDU threshold or the maximal delay of the oldest packet reaches a pre-assigned value.

Download PDF sample

Rated 4.67 of 5 – based on 29 votes