This paper presents the effects of tropical rain on the performance of millimeter-wave fixed cellular system. The system is local multipoint distribution service (LMDS) system that will be implemented in Surabaya, Indonesia. Performance parameters of the system are link availability and channel capacity. The system operates at 30 GHz frequencies. Adaptive coded modulation (ACM) and Equal Gain c...

Monin-Obukhov theory predicts the well-known log-linear form of the vertical wind speed profile. A turbulence intensity profile can be estimated from this by assuming that the standard deviation of the wind speed is proportional to the friction velocity. Two parameters, namely the aerodynamic surface roughness length and the MoninObukhov length, are than needed to predict the vertical wind spee...

Simulations in which a globular ring polymer with delocalized knots is separated in two interacting loops by a slipping link, or in two noninteracting globuli by a wall with a hole, show how the minimal crossing number of the knots controls the equilibrium statistics. With slipping link the ring length is divided between the loops according to a simple law, but with unexpectedly large fluctuati...

In this paper, Performance evaluation of Free Space Optical Communication Link with Different Parameters has been observed. It has been observed that BER of received data increases when path length is increases, also increase when data rate increases. In other case it observed that BER of received data increases when path length is increases, also increase when divergence angle increases and Q ...

For the case of HME-based controllers, we see that queue length increases to a large peak at the initial stage, followed by a transient period of less than optimum link utilisation. This corresponds to the period before HME has learnt, because we h a ve used random initial weights for the HME. In actual applications, the combination of both on-line and o-line training may be necessary. The init...