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System for testing soft handoff functionality of a mobile station used for a code division multiple access (CDMA) mobile communication system
System for testing soft handoff functionality of a mobile station used for a code division multiple access (CDMA) mobile communication system
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机译：用于测试用于码分多址（CDMA）移动通信系统的移动台的软切换功能的系统
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摘要
A base station simulator (400) provides testing of soft handoff functionality for a mobile station (400), such as a mobile telephone, between a first base station (BS1) and a second base station (BS2). The base station simulator (400) includes two digital baseband processors (402) and (404) for generating forward transmission signals to simulate the signals from the two base stations (BS1) and (BS2). The two digital base station signals have gain digitally controlled using multipliers (407-409) and the signals are added together digitally using a digital adder (410) before conversion to an analog signal using an A/D converter (412). The base station simulator (400) avoids the additional cost and space required for the redundant parts from two separate base station simulators, as conventionally used for testing soft handoff functionality. Adding of the digital signals before converting to analog in A/D converter (412) increases measurement accuracy, and control of the combined baseband processors (402) and (404) as opposed to separate controllers for separate base station simulators simplifies operation from conventional systems for testing soft handoff.
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