DMB baseband SoC supporting single-frequency network function

Abstract

The invention relates to a DMB baseband SoC supporting a single-frequency network function, and belongs to the field of chip system design. The Soc comprises a GPS module, an LCD screen, an LCD drive circuit, an Ethernet controller, a single-frequency network adapter, an RISC-V processor, a COFDM encoder, an RAM, a Flash, an SPI interface and a forming filter. According to the invention, the integration level of a transmitter is improved, the size of the transmitter is reduced, the power consumption of the transmitter is reduced, the circuit structure is optimized by a single-frequency network adapter circuit module in the DMB baseband SoC, and an adaptive calibration method is used, so that the circuit scale is reduced, and the frequency calibration precision is improved.

Description

technical field [0001] The invention belongs to the field of chip system design and relates to a DMB baseband SoC supporting the function of a single frequency network. Background technique [0002] DAB (Digital Audio Broadcast, Digital Audio Broadcasting) and its upgraded DAB+ and DMB standards are a new generation of digital broadcasting systems that replace traditional analog broadcasting such as FM and AM, and are currently the most competitive digital broadcasting standards in the world with the most potential users . [0003] But the current progress of DMB in the world is not optimistic. The main reason is that compared with FM, the operating cost of DMB is too high, and the main reason for the high cost is that the price of the core chip is too high, which leads to the high price of the transmitting system and receiver, making it difficult to popularize. In recent years, a large number of new applications have been proposed for DMB technology, and the research enth...

AI Technical Summary

Problems solved by technology

Prototypes built with these two architectures are not comparable in power consumption and performance to comparable SoC architectures

Secondly, the existing DMB transmitter is controlled by the host computer software on the PC side, so the mobility and portability of the whole set of transmitter equipment are poor, and each transmitter needs to be connected with a PC, which wastes resources

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