Tài Liệu GSM BTS 3900 doc
Tài Liệu GSM BTS 3900 doc
... (W)
PGSM 900/ GSM1 800/ 850/ 1900 (MHz) S3 31 / 20
S4 27 / 17
S5 18 / 12
S6 16 / 10
BTS3 900 GSM
1. Mô tả sản phẩm BTS3 900 GSM
- Mục đích: Tài liệu này cung cấp cái nhìn tổng quan về BTS3 900 GSM. ...
S24/24/24
Đặt tính RF của BTS3 900 /BTS3 900A
Đặc tính RF của BTS3 900 /BTS3 900A liên quan đến băng tần làm việc, phát, và thu nhận
Bảng 1 liệt kê các băng tần được hỗ trợ bởi...
Tài liệu GSM, cdmaOne and 3G systems P3 doc
... Prentice-Hall, 1996.
[7] Redl S.M., M.K. Weber and M.W. Oliphant, An Introduction to GSM, Artech House,
1995.
[8] Heine G., GSM Networks, Artech House, 1999.
[9] Lee C C. and R. Steele, Signal-to-interference ... Dehghan and A. Collard, Teletraffic per-
formance of GSM- 900/DCS-1800 in street microcells, IEEE Commun. Mag., 33,
Mar. 1995, 102–108.
3.3. MACROCELLULAR GSM NETWORK: UP-LINK T...
Tài liệu GSM and UMTS (P18) doc
... actual GSM world was quite minimal: Due to the late
timeframe, O&M systems unaffected by the new standards were largely up and running
throughout the GSM world.
18.4 The Elaboration of the GSM ... operators.
There was another reason why O&M gained more attention as GSM started growing. The
analogue networks existing before GSM were quite small and not much effort was require...
Tài liệu GSM and UMTS (P22) doc
... global
GSM/ UMTS communications. Venezuela, with GSM in 900 MHz, is considering the possi-
bility of deploying GSM1 .8 GHz in combination with the IMT2000 core-band/UMTS.
So the wide adoption of GSM ... American countries.
GSM already reached 500 million users in May 2001. GSM networks operate in 168
countries. GSM systems serve 69% of all digital mobile users. Therefore GSM can...
Tài liệu GSM, cdmaOne and 3G Systems P4 docx
... bits of the mask carry the pilot
Chapter
4
The cdmaOne System
4.1 Introduction
In contrast to the GSM system, which was designed and developed by a number of different
organisations working together, ... world.
At this point it is important to clarify the terminology we shall be using in the remainder
205
GSM, cdmaOne and 3G Systems. Raymond Steele, Chin-Chun Lee and Peter Gould
Copyright...
Tài liệu GSM Switching, Services and Protocols P3 docx
... shows the components of the GSM radio network. A GSM cell is expanded
around the radio area of a Base Transceiver Station (BTS) ; transmitter 1 receiver
transceiver. The BTS provides the radio channels ... the
Integrated Services Digital Network,ISDN [7]) are handled by a dedicated Gateway
3
Figure 3.1: GSM system hierarchy
GSM Switching, Services and Protocols: Second Edition. Jo...
Tài liệu GSM, cdmaOne and 3G systems P2 doc
... of the speech
2.3. THE GSM RADIO INTERFACE
77
Figure 2.2: Block diagram of a GSM transmitter and receiver.
2.3.1 The GSM modulation scheme
The modulation scheme used in GSM is Gaussian minimum ... allow GSM9 00
operators to provide more capacity in urban areas. For this reason, the frequency bands
described above are sometimes called the primary GSM9 00 bands (P -GSM9 00). The ex-
t...
Tài liệu GSM doc
...
ORGANIZATION
4.
GSM NUMBERING
5.
GSM CALLING (MOC, MTC)
Overview
1.
INTRODUCTION TO GSM
2.
GSM ARCHITECTURE
a.
Components
b.
Interfaces
Overview
1.
INTRODUCTION TO GSM
a.
What is GSM
b.
GSM services
c.
History
d.
GSM ...
for ETACS, D-
AMPS/AMPS
Adapted for GSM in
1993
“Jane”
Introduced by
Ericsson in 1996
Several version
manufactured for
AMPS, GSM, DCS,
PCD1900...
Tài liệu GSM Switching, Services and Protocols P5 docx
... acceptable quality can be
conducted. GSM systems achieve a good speech quality with an SNR of about 11 dB.
With frequency hopping a value of 9 dB is suf®cient. GSM provides for an optional
frequency ... activate frequency hopping.
5.2 Physical Channels
69
Figure 5.7: GSM full-rate traf®c channel with frequency hopping
5.2.4 Summary
A physical GSM channel is de®ned by a sequence of fre...