4-4 Transmission Systems for Specified Radio Microphone

4 Gbps impulse radio (IR) ultra-wideband (UWB) transmission over 100 meters multi mode fiber with 4 meters wireless transmission.

We present experimental demonstrations of in-building impulse radio (IR) ultra-wideband (UWB) link consisting of 100 m multi mode fiber (MMF) and 4 m wireless transmission at a record 4 Gbps, and a record 8 m wireless transmission at 2.5 Gbps. A directly modulated vertical cavity surface emitting laser (VCSEL) was used for the generation of the optical signal. 8 m at 2.5 Gbps corresponds to a b...

Mechanized Reasoning About Actions Specified in .4*

In order to prove that a sequence of actions can transform an initial situation of the world to a goal situation when complete knowledge of the world is never available, default rules that serve to complete partial descriptions of the world are usually deemed necessary. This leads to non-monotonic reasoning which has proven to be difficult to formalize. In this paper, we present a mechanized fo...

The Geography Problem for 4–manifolds with Specified Fundamental Group

Fix a group G and let M(G) denote the class of closed oriented manifolds with π1(M) ∼= G. The geography of M(G) is the set of integer pairs {(σ(M), χ(M)) | M ∈ M(G)}, where σ and χ denote the signature and Euler characteristic. This paper explores general properties of the geography of M(G) and undertakes an extended study of M(Zn).

On some colouring of 4-cycle systems with specified block colour patterns

The present paper continues the study (begun by Quattrocchi, Colouring 4-cycle systems with specified block colour pattern: the case of embedding P3-designs, Electron. J. Combin., 8 (2001)) of 4-cycle systems with specified block colour patterns that are also strict colourings in the sense of Voloshin (Coloring Mixed Hypergraphs: Theory, Algorithms and Applications, American Mathematical Societ...

Signals & Systems Handout # 4 H - 4