Original Research Paper
1. Indoor Non-directed Optical Wireless Communications - Optimization of the Lambertian Order

Z. Ghassemlooy; D. Wu; M. A. Khalighi; X. Tang

Volume 1, Issue 1 , Winter and Spring 2013, Pages 1-9


  For an indoor non-directed line of sight optical wireless communication (NLOS-OWC) system we investigate the optimized Lambertian order (OLO) of light-emitting diodes (LEDs). We firstly derive an expression for the OLO from a conventional Lambertian LED model. Then, we analyze the indoor multi-cell NLOS-OWC ...  Read More

Original Research Paper
2. 3D Hand Motion Evaluation Using HMM

A. Safaei; M. Jahed

Volume 1, Issue 1 , Winter and Spring 2013, Pages 11-18


  Gesture and motion recognition are needed for a variety of applications. The use of human hand motions as a natural interface tool has motivated researchers to conduct research in the modeling, analysis and recognition of various hand movements. In particular, human-computer intelligent interaction has ...  Read More

Original Research Paper
3. High Speed Delay-Locked Loop for Multiple Clock Phase Generation

A. Ghanbari; A. Sadr; M. Nikoo

Volume 1, Issue 1 , Winter and Spring 2013, Pages 19-27


  In this paper, a high speed delay-locked loop (DLL) architecture ispresented which can be employed in high frequency applications. In order to design the new architecture, a new mixed structure is presented for phase detector (PD) and charge pump (CP) which canbe triggered by double edges of the input ...  Read More

Original Research Paper
4. Rateless Coding over Wireless Relay Networks Using Amplify/Decode and Forward Relays

M. Shirvanimoghaddam; S. Movassaghi

Volume 1, Issue 1 , Winter and Spring 2013, Pages 29-34


  In this paper two different rateless transmissionschemes are developed. In the proposed scheme, relay node candecode and forward the message to the destination if they areable to decode it, or amplify and forward the message to thedestination. Based on the analysis and simulation resultsprovided in this ...  Read More

Original Research Paper
5. Driving/Regeneration and Stability Enhancement of a 4WD Hybrid Vehicles Using Multi-Stage Fuzzy Controller

S. M. Sharouni; P. Naderi; N. Taghizadegan

Volume 1, Issue 1 , Winter and Spring 2013, Pages 35-42


  In front wheels driven vehicles, fuel economy can be obtained by summing torques applied to rear wheels. On the other hand, unequal torques applied to rear wheels provides enhanced safety. In this paper, a model with seven degrees of freedom is considered for the vehicle body. Thereafter, power-train ...  Read More

Original Research Paper
6. RTDGPS Implementation by Online Prediction of GPS Position Components Error Using GA-ANN Model

M. H. Refan; A. Dameshghi

Volume 1, Issue 1 , Winter and Spring 2013, Pages 43-50


  If both Reference Station (RS) and navigational device in Differential Global Positioning System (DGPS) receive signals from the same satellite, RS Position Components Error (RPCE) can be used to compensate for navigational device error. This research used hybrid method for RPCE prediction which was ...  Read More

Original Research Paper
7. The Sine-Cosine Wavelet and Its Application in the Optimal Control of Nonlinear Systems with Constraint

R. Hajmohammadi; H. NasiriSoloklo; M.M. Farsangi

Volume 1, Issue 1 , Winter and Spring 2013, Pages 51-55


  In this paper, an optimal control of quadratic performance index with nonlinear constrained is presented. The sine-cosine wavelet operational matrix of integration and product matrix are introduced and applied to reduce nonlinear differential equations to the nonlinear algebraic equations. Then, the ...  Read More