HUAWEI E1820 HSPA+ USB Slider
（
W2100+GSM
）
V100R001
Product Description
Issue 01 (2009-02-12)
Commercial in Confidence
Page 13 of 19
Baseband Signal Processing
It processes HSPA+/UMTS/EDGE/GPRS/GSM baseband digital signals, including:
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Modulating/Demodulating HSPA+/UMTS baseband signals
l
Modulating/Demodulating EDGE/GPRS/GSM baseband signals
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Encoding/Decoding HSPA+/UMTS channel
l
Encoding/Decoding EDGE/GPRS/GSM channel
Bottom Layer Driver
It drives peripherals, including USB, LED, Micro-SD and SIM/USIM.
Platform Service Subsystem
It initializes programs, diagnoses the running of the system, downloads data and
serves as a watchdog.
Protocol Stack System
It processes protocols of HSPA+/UMTS/EDGE/GPRS/GSM.
Application System
It sends laptop commands to the bottom layer protocol for processing and returns the
value to the laptop.
Existing applications include the following:
l
Call management
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Message management
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CS/PS domain service management
User Interface
It provides interfaces to connect peripherals. Interfaces are for LED Micro-SD and
SIM/USIM.
Application Management
Through the application window, you can set the parameters of the E1820 and
operate the E1820.
