Satellite Communication Engineering

Title	Satellite Communication Engineering
Edition
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ISBN/ISSN
Authors	K. J. Ray Liu
Medium
Language	English
Publisher	Marcel Dekker, Inc.
Publish Year	2002
Publication Place
Collation
Abstract/Notes	Satellite communication is one of the most impressive spin-offs from space programs, and has made a major contribution to the pattern of international communications. The engineering aspect of satellite communications combines such diverse topics as antennas, radio wave propagation, signal processing, data communication, modulation, detection, coding, filtering, orbital mechanics, and electronics. Each is a major field of study and each has its own extensive literature. Satellite Communication Engineering emphasizes the relevant material from these areas that is important to the book�s subject matter and derives equations that the reader can follow and understand. The aim of this book is to present in a simple and concise manner the fundamental principles common to the majority of information communications systems. Mastering the basic principles permits moving on to concrete realizations without great difficulty. Throughout, concepts are developed mostly on an intuitive, physical basis, with further insight provided by Copyright © 2002 by Marcel Dekker, Inc. All Rights Reserved. means of a combination of applications and performance curves. Problem sets are provided for those seeking additional training. Starred sections containing basic mathematical development may be skipped with no loss of continuity by those seeking only a qualitative understanding. The book is intended for electrical, electronics, and communication engineering students, as well as practicing engineers wishing to familiarize themselves with the broad field of information transmission, particularly satellite communications.
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Reverse Link Test Tool and Equipments

Single Cell Function Test (SCFT)

1.1 Test Tool and Equipments Descriptions

There are two types of test tool when performing the field test. It is composed of Forward Link Analysis tool and Reverse Link Analysis tool. The specification, manufacturer, quantity of each equipment will be provided in detail in separated document.

Forward Link test tool and equipment descriptions

Test tool and equipment are as follows when analyzing the data on the forward link.

Tool/Equipments	Company	Main Functions
BlueRose	Will’ Tek	Mobile station monitoring and Data Logging tool on the forward link for 1x and EVDO.
IDA	Will’ Tek	Analyzing the logged data for 1x and EVDO.
Test Van	-	Test Tool setup and mobility
PC	-	Test Tool setup and Parameter change
Data cable	-	The interface cable between mobile and PC
Spectrum Analyzer		BTS Transmit power measurement
Angle Detector compass	-	Antenna Installation Check

Optimization Procedures

This document presents in detail optimization procedure for assuring effectively network quality. This procedure is based on Voice/Data call in cdma2000-1X and Data call in EVDO.

Optimization procedure shall be performed, when installation of BTS is completed and BTS is inter-worked with MSC. Commercial service shall be provided, after completion and trial service is offered, at the result of optimization procedure.

Optimization Procedures are divided into the following stages based on operational stage.

Ÿ Stage 1 : Single Cell Function Test

Ÿ Stage 2 : Cluster Optimization

Ÿ Stage 3 : System Optimization

Stage 1 : Single Cell Function test

Stage 1 is for verifying whether individual BTS works well or not, by making a single cell function test of BTS hardware and software.

Essential items to be tested are as follows:

1) BTS Transmitter Output Measurement Test

2) Initial parameter establishment (Pilot PN/System ID/Site ID/Frequency, Neighbor List)

3) Call Origination and Termination Test

4) Softer Handoff Test/Antenna installation check (Direction, Tilt, Transmission Line)

5) Single Cell Coverage Test

6) Noise Floor Test

Stage 2 : Cluster Optimization

Stage 2 is for testing several BTSs in cluster, in order to verify the inter-work and performance between BTSs. Stage 2 is aimed at checking basic field functions and performance in mobile communication system, assuring primary safety in system and network, and verifying conditions for maintaining the best quality of call and optimization in service aspects.

1) Basic Service Area Establishment

2) Voice Coverage Optimization

3) Data Coverage Optimization

4) FER optimization

5) Voice Handoff Optimization

6) Data Handoff Optimization

7) Shadow Area Optimization(if needed)

8) Pilot Pollution Area Optimzation(if needed)

Stage 3 : System Optimization Completion

Stage 3 is for verifying finally comprehensive performance in network.

Essential tests to be performed at stage 3 are as follows:

1) Call Quality Optimization

2) System Capacity test