Radio communication transmission system and method based on software defined radio

1. A Software Defined Radio (SDR)-based radio communication transmission system, comprising a front-end analog interface unit, a Digital-to-Analog (D/A) and Analog-to-Digital (A/D) conversion unit, a core processing unit and a storage unit, which adopt a universal bus for interconnection and interworking, the universal bus comprising a parallel bus for controlling data transmission and a serial bus for controlling instruction signal transmission, wherein

the front-end analog interface unit is configured to acquire data compatible with different radio communication standards, and to perform front-end processing on the data;

the D/A and A/D conversion unit is configured to perform a D/A conversion and an A/D conversion under the control of the core processing unit;

the core processing unit is configured to: acquire the front-end processed data from the front-end analog interface unit; and, compare a data format required by the current working mode with that of the front-end processed data, and then, according to a result of the comparison, choose to transmit the front-end processed data to the D/A and A/D conversion unit by the control of the universal bus, or control, through the universal bus, the storage unit to write or read data; and

the storage unit is configured to store the written or read data.

2. The system according to claim 1 , wherein the front-end analog interface unit comprises an antenna and a radio-frequency part and is further configured to perform the front-end processing comprising antenna reception, low-noise amplification, frequency mixing and filtering processing.

3. The system according to claim 1 , wherein the core processing unit is further configured to:

if the result of the comparison is that the data format required by the current working mode is the same as that of the front-end processed data, it is determined that the radio communication standard of the data accords with the current working mode, directly transmit the front-end processed data to the D/A and A/D conversion unit through the parallel bus; and

if the result of the comparison is that the data format required by the current working mode is different from that of the front-end processed data, it is determined that the radio communication standard of the data does not accord with the current working mode, store the front-end processed data to the storage unit temporarily through the parallel bus and await an idle state of the current working mode for further processing.

4. The system according to claim 1 , wherein the front-end analog interface unit comprises an antenna and a radio-frequency part and is further configured to perform the front-end processing comprising antenna reception, low-noise amplification, frequency mixing and filtering processing.

5. A Software Defined Radio (SDR)-based radio communication transmission method, wherein a front-end analog interface unit, a Digital-to-Analog (D/A) and Analog-to-Digital (ND) conversion unit, a core processing unit and a storage unit adopt a universal bus for interconnection and interworking, universal bus comprising a parallel bus for controlling data transmission and a serial bus for controlling instruction signal transmission, and the method comprising:

acquiring, by the front-end analog interface unit, data compatible with different radio communication standards, and performing front-end processing on the data; and

comparing, by the core processing unit, a data format required by the current working mode with that of the front-end processed data, and then, according to a result of the comparison, choosing to transmit the front-end processed data to the D/A and A/D conversion unit by the core processing unit under the control of the universal bus.

6. The method according to claim 5 , wherein the front-end processing comprises: antenna reception, low-noise amplification, frequency mixing and filtering processing.

7. The method according to claim 5 , wherein the step of comparing a data format required by the current working mode with that of the front-end processed data by the core processing unit, and then, according to a result of the comparison, choosing to transmit the front-end processed data to the D/A and A/D conversion unit comprises:

if the result of the comparison is that the data format required by the current working mode is the same as that of the front-end processed data, it is determined that the radio communication standard of the data accords with the current working mode, then the core processing unit directly transmitting the front-end processed data to the D/A and A/D conversion unit through the parallel bus; and

if the result of the comparison is that the data format required by the current working mode is different from that of the front-end processed data, it is determined that the radio communication standard of the data does not accord with the current working mode, then the core processing unit storing the front-end processed data to the storage unit temporarily through the parallel bus and awaiting an idle state of the current working mode for further processing.

8. The method according to claim 7 , further comprising the step, before the front-end processed data is transmitted to the D/A and A/D conversion unit, of:

sending, by the core processing unit, the D/A and A/D conversion unit through the serial bus a control instruction of preparing to receive data; and

receiving, by the D/A and A/D conversion unit, the front-end processed data through the parallel bus after receiving the control instruction.

9. The method according to claim 5 , wherein the front-end processing comprises: antenna reception, low-noise amplification, frequency mixing and filtering processing.