The IEEE 802.11g physical layer is based on coded orthogonal frequency division multiplexing (COFDM) using the industry standard [133 171] binary convolutional code. In the presence of Bluetooth interference this code struggles to provide good packet error rate (PER) performance. In this paper Turbo coding is considered as an alternative to convolutional coding. The results show that Turbo codi...

Orthogonal Frequency Division Multiplexing (OFDM) is a well-known technique for the broadband wireless communication system. However, a main problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed that result in Inter carrier Interference (ICI). ICI causes power leakage among subcarriers thus degrading the system performance. This paper studie...

Abstract Personal access communications system (PACS) is a 2 GHz band personal communications services (PCS) standard that supports 32 kbps wireless access services for fixed and mobile subscribers. This paper presents a physical layer architecture, and evaluates the performance, of a multicarrier PACS (MPACS) system based on a combination of orthogonal frequency division multiplexing (OFDM) an...

This paper is aimed at evaluating critical success factors in Business Intelligence (BI) implementation in an Enterprise Resource Planning (ERP) environment. The data analysis method used in this paper is the Decision Making Trial and Evaluation Laboratory Model (DEMATEL). The study has been conducted on a cement manufacturing strategic holding company that has implemented ERP since 2010. This ...

Buoyant densities of cells from exponentially growing cultures of the fission yeast Schizosaccharomyces pombe 972h- with division rates from 0.14 to 0.5 per h were determined by equilibrium centrifugation in Percoll gradients. Buoyant densities were independent of growth rate, with an average value (+/- standard error) of 1.0945 (+/- 0.00037) g/ml. When cells from these cultures were separated ...

The performance of Absolute Polar Duty Cycle Division Multiplexing (AP-DCDM) over Polarization Division Multiplexing (PolDM) system is presented based on the simulation results, in order to double the capacity in optical fiber links. It is demonstrated that the spectral width occupied by 10 Gb/s RZ is 40 GHz whereas, this value can be reduced to 20 GHz over 2 channels of the proposed system. Si...

This study examines the link between health and housework among older couples. For those out of the paid labor force, many of the standard arguments about relative resources and time availability no longer hold. Women spend more time on domestic tasks than men at any age; however, it is unclear how health shapes the household division of labor based on gender among older adults. This study exam...

In this letter, we extend our investigation of generalized multicarrier direct-sequence code-division multiple access by considering two additional types of chip waveforms, namely, the time-domain half-sine and raised-cosine chip waveforms, in addition to the rectangular chip waveform. A range of closed-form equations are provided for quantifying the effect of both the multipath interference an...

The influential Berkeley theoretical physicist Geoffrey Chew renounced the reigning approach to the study of subatomic particles in the early 1960s. The standard approach relied on a rigid division between elementary and composite particles. Partly on the basis of his new interpretation of Feynman diagrams, Chew called instead for a "nuclear democracy" that would erase this division, treating a...

The cytoplasmic determinants Numb and Prospero are distributed asymmetrically into the daughter cells of Drosophila neuroblasts. The proteins encoded by the genes inscuteable, staufen and miranda are involved in the localisation of Prospero.