Results 211 to 220 of about 23,576 (261)
Some of the next articles are maybe not open access.
Modeling wireless channel fading
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002We compare measured fading data with the popular Rayleigh model. Our results show that this model does not agree with the experimental data. As an alternative, we approximate the experimental data using autoregressive moving average (ARMA) models. To validate the models, we compare several characteristics of fading obtained analytically, by simulation,
W. Turin, R. Jana, C. Martin, J. Winters
openaire +1 more source
Wireless channel and interference
2023This chapter focuses on various critical aspects of wireless channel starting with explanation of the dominant propagation phenomena and their resultant effects on the system. It then touches upon mechanisms employed for empirical measurement of these channel effects, as well as techniques commonly used to represent them in a way that is useful for ...
Kihero, Abuu Bakari +2 more
openaire +1 more source
Terrestrial wireless channel modeling
2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277), 2002An increasing number of prediction tools is available to compute coverage areas for terrestrial wireless information systems using the VHF/UHF frequency band. Accurate digital terrain data files are more often required and easily available. However, for broadband applications, a comprehensive characterization of the transmission channel may be needed ...
openaire +1 more source
A generic channel simulator for wireless channels
MILCOM 97 MILCOM 97 Proceedings, 2002This paper reviews the wireless channels simulated by the generic channel simulator (GCS) a software package developed for the DoD. The wireless channels considered are: cellular/PCS, VHF/UHF mobile-mobile and mobile-base station, VHF/UHF air-air and air-ground, land mobile satellite, indoor channels, and HF ionospheric. Simulations include distortion (
openaire +1 more source
Joint source/channel coding for wireless channels
1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century, 2002Shannon's (1948) fundamental theorem showing that source coding and channel coding can be separated without any loss of optimality does not apply to general time-varying channels. Since the distortion by the source encoder decreases with the data rate, while the channel errors increase with the data rate, the joint source/channel coding problem reduces
openaire +1 more source
Artificial channels for confined mass transport at the sub-nanometre scale
Nature Reviews Materials, 2021Jie Shen, Gong-Ping Liu, Yu Han
exaly
Interference in Wireless Channels
2011The analysis and discussion so far in Chaps. 4 and 5 examined the effects of fading and shadowing in wireless systems while ignoring the possibility that the signal under consideration might be impacted by other signals, typically from other channels operating at the same frequency band.
openaire +1 more source