ABB CI546 3BSE012545R1 Serial data stream module

Description

ABB CI546 3BSE012545R1 Serial data stream module

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The transmitter of the CI546 3BSE012545R1 system is shown in Figure 1. The transmitter first maps binary sources to complex points on a fixed constellation diagram and converts them into parallel data streams. The number of parallel data for each OFDM symbol is determined by the number of subcarriers in the system. Then insert a pilot signal with a predetermined position and size in the middle, as the specified pilot position. The information sent by these pilot signals is known to the receiver and can be used to estimate the impact of the external environment on the transmitted signal, such as time-varying channel effects. This article uses them to estimate distorted signals. CI546 3BSE012545R1 converts the data stream into a time-domain signal through IFFT operation, and finally converts it into a serial data stream, which is then converted into an analog signal and sent out through a digital to analog converter and power amplifier, as shown in Figure 1.

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