초록 ▼

The present invention relates to a modulated signal generator for testing the working functions of a wideband code division multiple access (CDMA) in a wireless local loop (WLL) system. The generator includes: a first modulator having a pilot channel, a synchronous channel, a paging channel, and at

The present invention relates to a modulated signal generator for testing the working functions of a wideband code division multiple access (CDMA) in a wireless local loop (WLL) system. The generator includes: a first modulator having a pilot channel, a synchronous channel, a paging channel, and at least one first power control and signaling (PCS) channel and one first traffic channel for performing modulation of I and Q signals through one of the channels; a plurality of second device having a plurality of a second PCS channel and second traffic channel for performing modulation of I and Q signals through one of the plurality of the second PCS channel and the second traffic channel; a combining device connected to receive a plurality of output I and Q signals from the first device and the plurality of second device, wherein the combining device combines the plurality of output signals into a combined output I and Q signals; filtering device connected to receive the combined output I and Q signals for filtering the combined output I and Q signals; and, a digital-to-analogue converter coupled to the filtering device for converting the filtered I and Q signals into respective analog I and Q signals.

대표청구항 ▼

[ What is claimed is:] [1.]1. A modulated signal generator for producing a plurality of data signals in a wideband code division multiple access (CDMA) system, comprising:a first modulator having a pilot channel, a synchronous channel, a paging channel, and at least one first power control and signa

[ What is claimed is:] [1.]1. A modulated signal generator for producing a plurality of data signals in a wideband code division multiple access (CDMA) system, comprising:a first modulator having a pilot channel, a synchronous channel, a paging channel, and at least one first power control and signaling (PCS) channel and one first traffic channel for performing modulation of I and Q signals through one of said channels;a plurality of second modulators having a plurality of a second PCS channel and second traffic channel for performing modulation of I and Q signals through one of said plurality of said second PCS channel and said second traffic channel;combining means connected to receive a plurality of output I and Q signals from said first modulator and said plurality of second modulators, wherein said combining means combines said plurality of output signals into a combined output I and Q signals;filtering means connected to receive said combined output I and Q signals for filtering said combined output I and Q signals; anda digital-to-analogue converter coupled to said filtering means for converting said filtered I and Q signals into respective analog I and Q signals.