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wireless communication
Posted Date: 27 Mar 2008 Resource Type: Articles/Knowledge Sharing Category: Education
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Posted By: karthikeyan Member Level: Silver
Rating:  Points: 2
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Wireless communications is a rapidly growing segment of the communications industry, with the potential to provide high-speed high-quality information exchange between portable devices located anywhere in the world. Potential applications enabled by this technology include multimedia Internet-enabled cell phones, smart homes and appliances, automated highway systems, video teleconferencing and distance learning, and autonomous sensor networks, to name just a few. However, supporting these applications using wireless techniques poses a significant technical challenge.
This course will cover advanced topics in wireless communications for voice, data, and multimedia. We begin with a brief overview of current wireless systems and standards. We then characterize the wireless channel, including path loss for different environments, random log-normal shadowing due to signal attenuation, and the flat and frequency-selective properties of multipath fading. Next we examine the fundamental capacity limits of wireless channels and the characteristics of the capacity-achieving transmission strategies. These strategies are typically not practical. Thus, our next focus will be on practical digital modulation techniques and their performance under wireless channel impairments, including flat and frequency selective fading. The next part of the course is spent investigating techniques to improve the speed and performance of wireless links. We will investigate the design and performance of adaptive modulation and diversity techniques to compensate for flat-fading. Three techniques to combat frequency-selective fading are then examined: adaptive equalization, multicarrier modulation, and spread spectrum. We will also study the multiple access capabilities of spread spectrum with multiuser detection. The course concludes with a brief overview of wireless networks, including multiple and random access techniques, WLANs, cellular system design, and ad-hoc network design. Applications for these systems, including the evolution of cell phones and PDAs, smart homes and appliances, sensor networks, and automated highways and skyways, will also be discussed.
Announcements
Practice Midterms for past 3 years have been posted. As long as you attempt some of the questions and submit them to Pat, you will get the solutions to all three exams. There are 10 extra credit points for those who attempt any practice exam. These need to be turned in last by Friday noon to get extra credit points and their solutions.
For the midterm week, OH's are T 5-6pm (Pckrd 036), W 5-6pm (Pckrd 104), Th 9:45-10:45 am (Pckrd 104), and Th 5-6 pm (Pckrd 036). Email OH's on W 10-11pm and F 10-11am.
Midterm review session will be from 4-5pm Tuesday, Herrin 195 (Notice that time change from regular discussion sections for homework).
HW5 deadline is extended to Monday by 5pm.
The first 3 problems in HW5 are carry on from "new" HW4, however, everyone is expected to do them.
Midterm is postponed and is now scheduled on Friday 2/29 from 12:05 to 2:05 (2 hours total) in Gates B12.
Deadline for HW 3 is extended to Friday 2/8 by noon.
HW 3 is now posted. It is due on its regular due date - 2/7 at noon.
The TA OH's on Wednesday (1/30) from 5-6pm has been moved to Tuesday (1/29) from 5-6pm.
Class room location changed from Room 128 in School of Education Building to Gates B12.
Review Session will be held in Room 195 in Herrin Hall.
Lecture 1 notes posted.
First class on Wednesday 1/9.
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Basic Course Information
Announcements
Homeworks
Midterm
Final
Practice Midterms
Practice Finals
Lectures
Class Websites from Previous Years
Resources: Other Wireless Links
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