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International Journal of Communications, Network and System Sciences is an international journal dedicated to the latest advancements in communications, network and system Science. The goal of this journal is to keep a record of the state-of-the-art research and promote the research work in the areas. This journal inv…
Anping WANG, Qiwu WU, Xianwei ZHOU, Jianping WANG
In this paper, we propose a new multicast wavelength assignment algorithm called NGWA with complexity of O(N), where N is the number of nodes on a multicast tree. The whole procedure of NGWA algorithm is separated into two phases: the partial wavelength assig…
Khodr A. SAAIFAN, Emad K. AL-HUSSAINI
Space-Time Frequency (STF) codes for MIMO-OFDM over block-fading channel can achieve rate?? Mt and full-diversity Mt Mr Mb L which is the product of the number of transmit antennas Mt, receive antennas Mr, fading blocks Mb and channel taps L. In this article,…
Long-Sheng LI, Gwo-Chuan LEE, Li-Keng KANG
A mobile ad hoc network (MANET) is a wireless network without any fixed infrastructure. All nodes must communicate with each other by a predefined routing protocol. Most of routing protocols don’t consider binding internet addresses to mobile nodes. However,…
Abdul Qadir ANSARI, Abdul Qadeer K. RAJPUT, Adnan Ashraf ARAIN, Manzoor HASHMANI
WiMAX networks experience sporadic congestion on uplink when applications running at subscriber stations need more bandwidth to transmit than allocated. With the fast proliferation of mobile Internet, the wireless community has been looking for a framework th…
Mahmoud A. AL-QUTAYRI, Saleh R. AL-ARAJI, Abdulrahman Al-HUMAIDAN
This paper presents an efficient indirect fractional frequency synthesizer architecture based on the time delay digital tanlock loop. The indirect type frequency synthesis systems incorporate a low complexity high performance adaptation mechanism that enables…
Caiyong HAO, Hongli LIU, Jie ZHAN
Mobile WiMAX is a wireless networking system based on the IEEE 802.16e standard. In order to support mobile, some kinds of handover schemes must be adopted, and the hard handover is defined as mandatory. Since the data transmission should be paused during the…
Slim REKHIS, Jihene KRICHENE, Noureddine BOUDRIGA
Security incidents targeting information systems have become more complex and sophisticated, and intruders might evade responsibility due to the lack of evidence to convict them. In this paper, we develop a system for Digital Forensic in Networking, called Di…
P. V. NAGANJANEYULU, K. SATYA PRASAD
OFDM is a promising technique for high data rate transmission and the channel estimation is very important for implementation of OFDM. In this paper, cyclic prefix (CP) can be used as a source of channel information which is originally used to reduce inter sy…
Mário Marques da Silva, Rui Dinis, Américo M. C. Correia
This paper considers iterative frequency-domain receivers for block transmission techniques with rate-1 Space Time Block Coding (STBC) for two and four transmit antennas using both Orthogonal Frequency Division Multiplexing (OFDM) and Single-Carrier (SC) sche…
Khaizuran ABDULLAH, Seedahmed S. MAHMOUD, Zahir M. HUSSAIN
The BER performance for an optimal circular 16-QAM constellation is theoretically derived and applied in wavelet based OFDM system in additive white Gaussian noise channel. Signal point constellations have been discussed in much literature. An optimal circula…
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International Journal of Communications, Network and System Sciences is an international journal dedicated to the latest advancements in communications, network and system Science. The goal of this journal is to keep a record of the state-of-the-art research and promote the research work in the areas. This journal inv… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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