The basic structure of the W-CDMA system is investigated first in this paper together with its characteristics which have been provided previously by the authors. The advantages of the W-CDMA are wide spreading and coherent detection with a pilot channel. The pilot channel is optimized to give the best performance of Bit Error Rate. New structure of W-CDMA receiver is then studied to increase t...

Recent studies have confirmed heart rate fall after treadmill exercise testing, or heart rate recovery, as a powerful predictor of mortality from heart disease. Heart rate recovery depends on central reactivation of vagal tone and decreased vagal activity is a risk factor for death. If heart rate recovery is defined as the fall in heart rate after 1 minute following peak exercise, then a heart ...

1. Introduction At multiple Gb/s data rates, virtually all the communication architectures converge to serial where the clock timing is recovered at the receiver via various clock recovery schemes. While serial communication architectures and technologies were first developed and implemented in network centric communication systems that are characterized by relatively low volume, high cost, and...

Hydraulic fracturing is one of the most common methods of well stimulation for reservoirs with low permeability. Hydraulic fracturing increases the flow capacity, alters flow geometry, bypasses damage and improves recovery factor. The pressure of most of Iranian oil reservoirs is declined and consequently the production is reduced. It is necessary to improve the production by using new stimulat...

investigating the role of drought stress conditions on physiological characteristics of plant may provide means to understand basic drought resistance. differences in leaf emergence rate, leaf relative water content (rwc), membrane stability index (msi), leaf mass area (lma), net photosynthesis (anet), stomatal conductance (gs), transpiration rate (e), intercellular co2 concentration (ci), ...

96 patients suffering from degenerative joint disease were treated with ultrasonic waves within a period covering december 1971 to april 1974. out of the to ta l number of 96 patients under treatment, 52 (54%) achieved a satisfacto ry rate while 3? patients (33%) enjoyed a lower rate of recovery and the remaining 12 patients (13%) had negative or unknown response. the methods ofaction and proce...