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- Albert Guillén i Fàbregas, Maxime Guillaud, +10 authors Zaiqing Li
- EURASIP J. Adv. Sig. Proc.
- 2006

We describe the design steps and final implementation of a MIMO OFDM prototype platform developed to enhance the performance of wireless LAN standards such as HiperLAN/2 and 802.11, using multiple transmit and multiple receive antennas. We first describe the channel measurement campaign used to characterize the indoor operational propagation environment,… (More)

- Prosenjit Bose, David G. Kirkpatrick, Zaiqing Li
- CCCG
- 1996

We present eecient polynomial time algorithms that place bn=2c vertex guards which cover the surface of an n-vertex polyhedral terrain, and similarly, bn=3c edge guards which cover the surface of an n-vertex polyhedral terrain. The time complexity of both algorithms, dominated by the cost of nding a maximum matching in a graph, is O(n 3=2).

- Prosenjit Bose, David G. Kirkpatrick, Zaiqing Li
- Comput. Geom.
- 2003

We present an optimal ¢´Òµ-time algorithm for the selection of a subset of the vertices of an Ò-vertex plane graph so that each of the faces of is covered by (i.e. incident with) one or more of the selected vertices. At most ÒÒ¾ vertices are selected, matching the worst-case requirement. Analogous results for edge-covers are developed for two different… (More)

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