3G几个不同的主频之间主要差别是什么？ - 未名空间MITBBS历史存档

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3G几个不同的主频之间主要差别是什么？

3G几个不同的主频之间主要差别是什么？# EE - 电子工程

w*d2008-10-22 07:10

1 楼

hey guys,
sorry to pop in!
有一个PART TIME的OFFER，暂时是21小时，但是一年后以后可以全职。有点忐忑。但是
真的是比较欣赏雇主，是一个很engaging的团队。所以说还是比较吸引人。就是不知道
究竟能不能申请H1B。查了网页说有的可以，有的说不可以。所以很疑惑：（
谢谢大家！

M*e2008-10-22 07:10

2 楼

e-file申请EAD卡。一个月前网上申请。一直没有动静。上星期五把补充材料寄出。今
天看网上，说card produced.
奇怪啊，难道不要打指纹，拍照片的啊？

K*y2008-10-22 07:10

3 楼

☆─────────────────────────────────────☆
fcecilia (我的自由式) 于 (Sun Jan 27 21:26:54 2008) 提到:
☆─────────────────────────────────────☆
CestTous (I hate this world) 于 (Sun Jan 27 22:04:16 2008) 提到:
好牛。。
有一个pletnev的偶也很喜欢

☆─────────────────────────────────────☆
fcecilia (我的自由式) 于 (Sun Jan 27 22:07:47 2008) 提到:
which one~~~ do you have link?
☆─────────────────────────────────────☆
CestTous (I hate this world) 于 (Sun Jan 27 22:08:27 2008) 提到:
http://www.youtube.com/watch?v=z9Z-HCq5EeU

z*a2008-10-22 07:10

4 楼

收到三个AD，大家畅所欲言，帮我出出主意吧？

s*k2008-10-22 07:10

5 楼

比如国内有800M和1900M，800M按照官方观点是非常适合发展农村市场.这个原因是什么
？难道因为可能的传播的距离远？比较适合农村地广人稀（相对）的情况。那么1900M
的优势又在哪里？主频不同在实际应用中最主要的差别是什么？

x*y2008-10-22 07:10

6 楼

nope

【在 w******d 的大作中提到】

: hey guys,
: sorry to pop in!
: 有一个PART TIME的OFFER，暂时是21小时，但是一年后以后可以全职。有点忐忑。但是
: 真的是比较欣赏雇主，是一个很engaging的团队。所以说还是比较吸引人。就是不知道
: 究竟能不能申请H1B。查了网页说有的可以，有的说不可以。所以很疑惑：（
: 谢谢大家！

k*w2008-10-22 07:10

7 楼

I dont know much about Binghamton or U of Delaware. As to SUNY-Buffalo, I
have a friend who graduated from the accounting program. She regretted that
she went to that school. Not to mention the damn cold weather in NY upstate.

【在 z*******a 的大作中提到】

: 收到三个AD，大家畅所欲言，帮我出出主意吧？

g*e2008-10-22 07:10

8 楼

800M is mainly for coverage and 1900M is mainly for capacity due to their
different propagation characteristics.
From system and handsets side, no difference. UMTS and GSM chipsets are
capable of handing different bands at the same time.

m*82008-10-22 07:10

9 楼

恩，不错不错。呵呵

z*a2008-10-22 07:10

10 楼

Thank you!
What kind of job did she find finally? Thanks again!

that
upstate.

【在 k*****w 的大作中提到】

: I dont know much about Binghamton or U of Delaware. As to SUNY-Buffalo, I
: have a friend who graduated from the accounting program. She regretted that
: she went to that school. Not to mention the damn cold weather in NY upstate.

g*s2008-10-22 07:10

11 楼

Why is 1900MHz mainly for capacity? To me, it is only because the spectrum f
rom 800MHz - 900MHz is too crowded. Can you explain more? Thanks.

【在 g*****e 的大作中提到】

: 800M is mainly for coverage and 1900M is mainly for capacity due to their
: different propagation characteristics.
: From system and handsets side, no difference. UMTS and GSM chipsets are
: capable of handing different bands at the same time.

a*e2008-10-22 07:10

12 楼

可以。
我拿到过。
就是申请绿卡比较难。

d*22008-10-22 07:10

13 楼

I also have a friend who graduated from suny-buffalo, she now works in
Deloitte in NYC... she said all her classmates found jobs finally... But
they graduated in 05. I don't know what the situation is now...

z*n2008-10-22 07:10

14 楼

you are right.
the bandwidth allocated to GSM at 900M is only 25MHz.
at 1800M it is 75MHz.
However, it is true that a lower carrier frequency
can make wider coverage.

f

【在 g******s 的大作中提到】

: Why is 1900MHz mainly for capacity? To me, it is only because the spectrum f
: rom 800MHz - 900MHz is too crowded. Can you explain more? Thanks.

p*y2008-10-22 07:10

15 楼

可以。只要每周有20小时的工作时数就符合part-time H1B的要求。

k*w2008-10-22 07:10

16 楼

This friend got a job offer from an accounting firm. She told me that the
other Chinese friends did actually find jobs, one in the local buffalo town
and the other in NYC, both tax positions with local accounting firms.
And I do know of people who was working at Deloitte NYC. I am not sure when
he/she graduated. Could be 04 or 05. This friend got an MBA degree and then
switched to accounting at Buffalo.
zczathena, if you are asking whether the program is good or not, from a job
placement standpo

r*s2008-10-22 07:10

17 楼

880~915MHz
1710~1785MHz

【在 z*****n 的大作中提到】

: you are right.
: the bandwidth allocated to GSM at 900M is only 25MHz.
: at 1800M it is 75MHz.
: However, it is true that a lower carrier frequency
: can make wider coverage.
:
: f

z*a2008-10-22 07:10

18 楼

谢谢kinghaw和dodowoo2002的回答！
我觉得从地点来看， Binghamton会好点，毕竟离NYC近，从师资和课程上看，我似乎
更喜欢Buffalo。但是我查了一下，四大在Buffalo都有office，而Buffalo的学校又
不多，这样从Buffalo毕业后找到四大工作的可能性会不会比较大呢？

z*n2008-10-22 07:10

19 楼

oh, 10M more were added later...:)
but not in all the countries.

【在 r******s 的大作中提到】

: 880~915MHz
: 1710~1785MHz

k*w2008-10-22 07:10

20 楼

The chances of landing an offer from those big four firms at small cities
like Buffalo are bigger? I honestly dont think so. Those firms tend to be
way smaller and more conservative in hiring, meaning that they are more
inclined to hire americans, esp whites.

【在 z*******a 的大作中提到】

: 谢谢kinghaw和dodowoo2002的回答！
: 我觉得从地点来看， Binghamton会好点，毕竟离NYC近，从师资和课程上看，我似乎
: 更喜欢Buffalo。但是我查了一下，四大在Buffalo都有office，而Buffalo的学校又
: 不多，这样从Buffalo毕业后找到四大工作的可能性会不会比较大呢？

s*k2008-10-22 07:10

21 楼

好像这个就是为什么中国联通的GSM表现不如中国移动的原因之一，联通用的是800M频
段但是移动用的是1900M频段。联通虽然吃亏但是由于还有CDMA频段，也不好说什么，
结果导致联通两个网络先天不足，后天经营维护也不行。所以差距才拉大的

【在 z*****n 的大作中提到】

: you are right.
: the bandwidth allocated to GSM at 900M is only 25MHz.
: at 1800M it is 75MHz.
: However, it is true that a lower carrier frequency
: can make wider coverage.
:
: f

x*e2008-10-22 07:10

22 楼

I don't recommend Binghamton.
Maybe you have already made your decision.

g*e2008-10-22 07:10

23 楼

Frequency allocation is almost different from country to country.
China mobile has both 900M and 1800M GSM sites.
Operator can do tighter frequency reuse pattern on 1800M/1900M and build
more sites to handle urban high density traffic area. Of course the
frequency penetration is weak on 1800M and 1900M and in door coverage is
poor.
700M/800M/900M are used to fill in the coverage holes and sometimes for
indoor coverage.

z*02008-10-22 07:10

24 楼

Buffalo的四大非常歧视中国人，我不看好你能进得去。

z*n2008-10-22 07:10

25 楼

china unicom's problem is caused by two reasons:
1. operating totally two different systems makes
the cost of operation much higher.
2. for both systems, the bandwidth allocation is
relatively small. Thus the trunk efficiency is
much lower than China Mobilcom and less profitable.

【在 s********k 的大作中提到】

: 好像这个就是为什么中国联通的GSM表现不如中国移动的原因之一，联通用的是800M频
: 段但是移动用的是1900M频段。联通虽然吃亏但是由于还有CDMA频段，也不好说什么，
: 结果导致联通两个网络先天不足，后天经营维护也不行。所以差距才拉大的

d*22008-10-22 07:10

26 楼

四大在buffalo都有office，但是没一个招国际学生的。
Binghamton的商学院是半路出家的吧，我是说成立了没多久，不知道其师资如何。
Deleware好像很是去美国对于考cpa的人要求最少的一个州，据说没毕业之前就可以参
加考试了。
你的本科如果是在中国读的，在纽约州，你必须毕业之后才够格靠cpa，而且明年就要
实施150个学分的规则了。
Suny中albany的商学院好像还可以，而且离纽约最近，怎么不申请他家阿？

z*n2008-10-22 07:10

27 楼

not true, actually frequency allocation for GSM is
more or less the same in most countries, except north America.
800-900MHz signal covers wider area is due to the diffraction
feature of this frequency band is better than that around 2GHz.
Actually the penetration ability of 2Ghz signal is better than 900Mhz

【在 g*****e 的大作中提到】

: Frequency allocation is almost different from country to country.
: China mobile has both 900M and 1800M GSM sites.
: Operator can do tighter frequency reuse pattern on 1800M/1900M and build
: more sites to handle urban high density traffic area. Of course the
: frequency penetration is weak on 1800M and 1900M and in door coverage is
: poor.
: 700M/800M/900M are used to fill in the coverage holes and sometimes for
: indoor coverage.

z*a2008-10-22 07:10

28 楼

我还没有做决定呢，现在在Binghamton和Buffalo两所中挑，非常矛盾，能不能说说
为什么不推荐Binghamton呢？谢谢！
我自己的想法是：
Binghamton：离NY近，离LG也近（NJ），听说他家商学院本科很好，但是又听说招
很多中国学生，我怕去了会不会英文难提高啊（不要笑我, haha)
Buffalo:离LG远，但是感觉商学院比较好，学术水平高（如果PhD肯定比Binghamton
好），而且好像Program比较小，可以得到的指导比较多。就是不知道以后找工作好
不好找。
大家再帮我参谋参谋，就快做决定了

【在 x****e 的大作中提到】

: I don't recommend Binghamton.
: Maybe you have already made your decision.

z*02008-10-22 07:10

29 楼

这么说吧，如果你没有身份，需要毕业之后公司给你办身份这种找工作的方式的话，而
且又是MSA，我不建议你来Buffalo。因为Buffalo的校园招聘资源极度倾斜于它的MBA项
目。毕业后的工作形势不会像你想象得那么好。大部分学生也都是去纽约找工作。如果
你能够申请到Buffalo的MSA，你的本科应该也是会计吧？这样的话还不如Delware，至
少毕业前就能够考CPA，这样对你找工作非常有帮助。

z*a2008-10-22 07:10

30 楼

Many courses of MSA in Delaware are related to Accounting information system
that I don't feel would be helpful for CPA Exam.
Meanwhile, there is few accountant firms in Delaware. So even I pass the CPA
test in Delaware, it will not help me to find a job in other states.
And also I heard that one-year working experience is required in Delaware
for licensing.

z*02008-10-22 07:10

31 楼

咋说呢，觉得你好像不是特别清楚关于CPA的一些基本问题啊，呵呵。没关系，看样子
你心里已经作决定了，那就去吧，反正这三所学校真是没啥太大区别。

z*a2008-10-22 07:10

32 楼

能不能帮我科普一下呢？谢谢！
还有一个原因是Delaware太贵了，一个学分要1000多呢。而且根本找不到学生了解了
解program的情况

【在 z*****0 的大作中提到】

: 咋说呢，觉得你好像不是特别清楚关于CPA的一些基本问题啊，呵呵。没关系，看样子
: 你心里已经作决定了，那就去吧，反正这三所学校真是没啥太大区别。

d*22008-10-22 07:10

33 楼

要拿cpa的证需要至少一年的工作经验，这规定很多地方都有，纽约州也不例外，不过1
个学分1000刀确实贵了些。。。
buffalo和binghamton其实差不多，没什么可比的。我认识的buffalo毕业的，都说那毕
业不好找工作，但最后都找到了工作，当然很多是鸡肋offer。
所以最终还是要看你的造化了。。。

system
CPA

【在 z*******a 的大作中提到】

: Many courses of MSA in Delaware are related to Accounting information system
: that I don't feel would be helpful for CPA Exam.
: Meanwhile, there is few accountant firms in Delaware. So even I pass the CPA
: test in Delaware, it will not help me to find a job in other states.
: And also I heard that one-year working experience is required in Delaware
: for licensing.

b*y2008-10-22 07:10

34 楼

For KPMG new york office, the top 3 campus hire: CUNY Baruch, Binghamton and
leigh. 2006 or 2005, PWC hired 60 undergraduates from Binghamton. Binghamon
has far better Accounting program than buffalo.

【在 z*******a 的大作中提到】

: 收到三个AD，大家畅所欲言，帮我出出主意吧？

p*y2008-10-22 07:10

35 楼

binghamton bah, i met many students from there when i interviewed with big 4
, nyc office

p*72008-10-22 07:10

36 楼

I know quite a few people with big 4 NYC office are from binghamton...

h*n2008-10-22 07:10

37 楼

不知道这些在四大来自Binghamton的都是美国学生还是中国学生？
听说Binghamton的MSA去年和今年都招了30个中国学生