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楼主 |
发表于 2008-4-22 09:36:58
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MD，直接贴了。
Communication theory:
What is entropy? How is entropy defined in information theory?
What is source coding? Why do we use source coding in communications? Could you give some examples of the commonly used source coding schemes?
What is channel coding? Why do we use channel coding? How is the coding rate defined in channel coding? Could you give some examples of commonly used channel coding schemes?
Information Capacity Theorem
Could you exemplify some digital modulation schemes?
Why is digital modulation applied ?
How is the bandwidth defined in communication channel? Could you exemplify some communication channel models?
What is AWGN channel? What are the common effects in wireless communication channels(multi-path, delay spread etc. and what are they?)
What is pulse modelation
TDMA, CDMA, FDMA
Signal processing:
What is IIR and FIR filter? Which one of them is the mostly used in digital signal processing? Please give some examples of famous FIR filters.
What is Fourier transform? What are the relations among input signal, output signal and impulse response of the system? What is FFT?
What is Laplace transform?
What is Z transform?
Computer architecture:
How is a general purpose computer look like?(CPU, Memory, I/O, BUS)
What is CPU? And what is CPU used for?
What is ISA(instruction set architecture)? What are the two essential parts of ISA?
What is RISC? What is the difference between RISC and CISC?
What is pipelining? Please give the generally used pipelining stages.
What is cache? How do you define “cache hit” and “cache miss”?
What is assembly language?
What are the essential stages when you want to convert an application which is written in a plain C code into assembly language?
Analog circuits:
What is Ohm’s Law?
What is transistor? What are the names of the three pins on a transistor?
Communication Net
TCP & UDP and how they make the transmission dependable.
What are the 7 layers of the usual transmission
Digital circuits:
What is CMOS? How many transistors does a modern CMOS circuit have?
How many transistors does a CMOS inverter have? What about a CMOS NAND gate?
DSP & MCU
Microwave:
Could you describe the Maxwell equations?
What is Poynting vector?
What is engine value?
Stochastic process:
What is probability distribution function? What is uniform distribution?
What is probability density function？
Gauss distribution
Norm distribution
Graduation Work
Have you applied another university? Which one you will choose if you are admitted by both? |
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发表于 2008-4-22 09:23:29
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