communication

[6rmingyi]

Read and write in the future, the students engaged in professional electronic information:
in this forum the other day to see a Information professional students to express views and opinions.
the late 90s in the last century, computers and telecommunications into science and engineering entrance one of the two most popular specialties in which I graduated college admission scores rank is the computer, telecommunications, applied mathematics and architecture.
However, many students after freshman gradually after they entered a period of confusion, not to become a school, copy homework, exam cheating Oil Stick, or lost in the so-called inside, such as hacking, cracking,real ugg boots,dress QQ space method, MUD (now the founder of online games), or do web pages, do flash, of course, made some money, but look back and think these extra years of college relative to your time worth it? Is it to do web pages, hackers are the so-called Science Telecom IT technology do
whether the students have their own professional development and understanding of modern telecommunications technology it? Do not say that about these mobile phones, mp3, digital camera, u disk digital product is the world's most cutting-edge electronic technology, as an e-professional students only know how to tell if the mp3, mobile phones, digital cameras, the performance of each brand, the parameters for a class The paper picked up the piece of advertising what can be seen, then that would shame you do not tell me that you are students of the Department of Electronics. At least you know mp3 international standards, why is it called mp3, and not called mp2, mpeg2, jp3 ... ... interpolation pixel digital camera which is what principle, how will the picture pixel interpolation as 200w 300w, the phone system block diagram What, what is 3G, CDMA, GSM, PHS, program-controlled telephone . But I can tell you, these things have in your textbook! Many students in the freshman and sophomore courses as the basis for some old and outdated, but once you get on the other juniors and seniors access to the most'm interested in the so-called most
example, a senior at our school as a only 1 / 4 less than, dare to come to the last test to the examination room only 1 / 5 of the. Why? Because many people the basics of the freshman, sophomore missed, and now regret it too late. Example, the majority of mobile phone antenna is frequency modulation and Similarly, if you have a serious read, AC3 encoding and so on into your textbooks to study these things are enough to your life, and also to do so many heretical things to do, so should pay attention to freshman and sophomore courses.
then study those who like telecom telecommunications technology and loves the students should have a kind of goal or plan?
first to know the current Broadly speaking, electronic communication contains three directions: (1) electronic circuits (2) communication (3) signal processing, like the OSI seven layer protocol, as the physical layer from the bottom to the middle and then high-level data link layer application layer, gradually from hardware to software changes. I have done in these three areas, and now I talk about the direction of these three views:
(1) electronic circuits, to engage in this direction can be said to be the most difficult, our department is also a graduate student in this direction the least. This direction is the most popular IC design. Because China is not yet developed the ability to integrated circuits, so the hope of the motherland to their faith in their bodies. I started to do is circuit design, but the tedious calculations and experiments scared me. Circuit design is about time. I was to do a high-frequency filter capacitor 5 District 5 inductors, let me design for 3 months! Insertion loss is not the Q value does not. In the drawing board, even at the location of a component design is not good, not parallel to the parallel, not perpendicular to the vertical, from the effect of a mess, even when you are in the software simulation is very perfect. So no patience for some students, electronic circuit is not a good direction.
(2) communication, communication can be said to be the favorite of professionals, from the past to the present mobile radio communications, and its fans has been increasing. But communication is a more complicated subject, it is and mathematics from birth to end on a bond. Lengthy equation, a bunch of variables formula, complex calculations, and laboratory environment and reality a huge difference. Clearly a communication transceiver circuit in the laboratory are correct, but a way to move out of Malaysia have not received anything, or car drive faster, demodulation on the mess. And high frequency radiation on the human body in the end have no effect has been a mystery, some engage in microwave communications and smart antennas are often asked him to mentor graduate students to eat more seaweed, sea and bring to absorb radiation. I had also done a project CDMA1x wireless Internet access, then the monopoly of the telecommunications market, put my thoughts in this direction.
(3) signal processing, that is, when I graduate, and now in the direction. Signal processing can be described as a family, biased in favor of software, and computer closely linked. Will learn the direction of signal processing and a variety of protocols,new look shoes, standards, recommendations, white papers, organizations dealing with (such as IEEE, CCITT telecommunications students should be familiar with these, right), once you design things that do not meet the standard, no different from a piece of garbage. Signal processing is very wide, like the circuit control, bus control (I2C bus, CANBUS bus), embedded systems (PLD, DSP, microcontroller or embedded Pentium 166MMX),goyard handbags, multimedia technology (image processing, image recognition, speech signal processing, video compression, streaming, encoding and decoding), etc., most of the time is the front of the computer to write programs, more boring, but do not buy the components around, doing experiments, collecting data, and does not require any experience, to get started is easy, though sometimes have contact with about the circuit, but most are given interface, or look at the format of input and output signals nothing more. More suitable for some Engage in multimedia technology, high-level language is necessary to understand more, but the most important thing is algorithms, international standards, the agreement is currently the most secure algorithm optimization, do not own a fresh start.
So telecommunications technology is a promising subject, we should not underestimate any of a course at random, and do not engage in what ought not heretical, the dry line, love line, having chosen her, To follow through with her, Oh