شرح متكامل لمادة شبكات الاتصالات ونقل البيانات
Data and Signals
3-1 ANALOG AND DIGITAL
Analog and Digital Data
Analog and Digital Signals
Periodic and Nonperiodic Signals
3-2 PERIODIC ANALOG SIGNALS
Sine Wave
Wavelength
Time and Frequency Domain
Composite Signals
Bandwidth
3-3 DIGITAL SIGNALS
Bit Rate
Bit Length
Digital Signal as a Composite Analog Signal
Application Layer
3-4 TRANSMISSION IMPAIRMENT
Attenuation
Distortion
Noise
3-5 DATA RATE LIMITS
Noiseless Channel: Nyquist Bit Rate
Noisy Channel: Shannon Capacity
Using Both Limits
3-6 PERFORMANCE
Bandwidth
ThroughputLatency (Delay)
Bandwidth-Delay Product