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Our objective is to design, analyze, prototype and experimentally study the theoretical underpinnings for a wireless internet that simultaneously achieves deployability, scalability, high performance and a cost-effective economic model. A core building block will be what we call wireless Transit Access Points. A transit access point, or TAP, is a wireless base station with two major features. First,...
In this paper, we proposed a novel approach to the design of MIMO transceiver for channel measurement on the system level. Transmit symbols based on the Chu sequences are adopted in the transmitter. Based on the design, a hardware platform for MIMO channel measurement in indoor environments has been developed to complete the real-time channel measurement for further channel estimation. Using the hardware...
This paper introduces a flexible RF front end for whitespace communication. The designed front end can operate over any frequency from 100 MHz to 2.5 GHz and the channel bandwidth can be programmable from 4.5 kHz to 10 MHz. This large frequency range and wide bandwidth makes this hardware suitable for implementing most wireless standards. A direct conversion RFIC developed by Motorola, drives the...
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