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ITIIS
2010
79views more  ITIIS 2010»
14 years 8 months ago
HMM-based Adaptive Frequency-Hopping Cognitive Radio System to Reduce Interference Time and to Improve Throughput
Cognitive Radio is an advanced enabling technology for the efficient utilization of vacant spectrum due to its ability to sense the spectrum environment. It is important to determ...
Sung Hwan Shon, Sung Jeen Jang, Jae Moung Kim
ITIIS
2010
138views more  ITIIS 2010»
14 years 8 months ago
Performance Analysis of Large CDMA Random Access Systems with Retransmission Diversity over Fading Channels
The random access systems, with retransmission diversity (RD) employment, over large random spreading code division multiple access (CDMA) channel subject to fading is investigate...
Kai Yu, Yi Sun, Pingzhi Fan, Xianfu Lei, Lei Shu
ITIIS
2010
131views more  ITIIS 2010»
14 years 8 months ago
The Analysis of Random Propagating Worms using Network Bandwidth
There is a well-defined propagation model, named the random constant spread (RCS) model, which explains worms that spread their clones with a random scanning strategy. This model ...
Kwangsun Ko, Hyun-Su Jang, Byuong Woon Park, Young...
ITIIS
2010
184views more  ITIIS 2010»
14 years 8 months ago
Class 4 Active RFID Multi-hop Relay System based on IEEE 802.15.4a Low-Rate UWB in Sensor Network
The low-rate (LR) UWB is a promising technology for the ubiquitous sensor network (USN) due to its extremely low power consumption and simple transceiver implementation. However t...
Hong Zhang, SungHyun Hong, KyungHi Chang
ITIIS
2010
94views more  ITIIS 2010»
14 years 8 months ago
AFSO: An Adaptative Frame Size Optimization Mechanism for 802.11 Networks
In this paper, we analyze the impact of different frame types on self-similarity and burstiness characteristics of the aggregated frame traffic from a real 802.11 wireless local a...
Xiaohu Ge, Cheng-Xiang Wang, Yang Yang, Lei Shu, C...