Some recent wireless presentations

Wireless Communications and Signal Processing Lab

Professor Friedlander is director of the Wireless Communications and Signal Processing Lab, located in Room 206 of Engineering 2 building. We have a well equipped state-of-the-art wireless lab:

with some excellent graduate students:

Our current research interests focus on

Performance Analysis of Wireless Systems
Multiple antennas for diversity and spatial multiplexing: MIMO, smart antennas
Reliable Communications in the License Exempt Spectrum
Cognitive radios
WLANs: Wi-Fi, Wi-Max and beyond
Broadband Wireless Access
Mobile WANs (2G, 2.5G, 3G, 4G)
Ultra Wideband
High-Speed Wireless Data
Quality of Service
Voice-over-IP
Cellular and Mesh Networks
Software defined radio
Modeling and estimation of the wireless channel
Equalization in rapidly time varying channels
Location estimation

Wireless Quiz

Answer one or more of the following questions and email your answer to friedlan@ee.ucsc.edu

Is the following statement true or false: "The capacity of a wireless network is essentially unlimited, or rather, is limited only by cost. Given enough antennas, transceivers, and processing power, coupled with smart algorithms, we can achieve any desired level of throughput." Explain your answer in detail.
Is the following statement true or false: "A wireless communications system is essentially the same as a wireleine system, except that the wires are replaced by radio links." Explain your answer in detail.
Predict what will be the five most widely used applications of wireless in 2010?
Compare the cost and capacity of a GSM network and a CDMA network (assume the same physical locations for the base stations and the same antennas). What do you conclude from your analysis?
Can Ultra Wideband interfere with conventional narrowband communication systems? Explain your answer in detail.
Explain how Ultra Wideband penetrates walls.
What is the total number of companies (including the ones that folded) producing Wi-Fi chips of various kinds?
What is the total number of wireless companies in the US? In the rest of the world?
Provide as many different definitions of "smart antennas" as you can.
Which companies made money providing exclusively wireless data access?
What is the maximum range which can be reached by Wi-Max when operating at 75MBPs? Specify the conditions under which this happens.
How much would you be willing to pay (per month, say) for unlimited wireless data access at a guaranteed rate of 10MBPs?
Develop your own version of OFDM and show how much better it is than all existing OFDM systems.
What is the main function of the IEEE wireless standards organizations?
What is the total number of people working in marketing and sales in the US wireless industry, and what is total number of engineers working in the same industry. Give the numbers for the years 1970, 1980,1990, and 2000. State your conclusions.
If all the wireless companies were to sell as many wireless devices as their sales projections predict, what will be the average RF radiation density on a typical street in a large city? Give an answer also for a typical house.
How many bits of data does an average person consume per day? How will this change 5 years from now? What is the maximum number of bits that a person can consume per day?
Give examples of wireless communication systems which break the Shannon limit.
What is the total amount of money invested in the wireless industry since 1990? What was the total return on investment? What conclusions do you draw from this?