Systems and methods for signal modulation of a plurality of downlink signal representative of a communication signal
Embodiments of systems and methods for modulating a downlink signals representative of a communication signal are provided herein. An example method comprises receiving an input signal; in a first one or more processing blocks in a one or more processors, performing a first modulation operation on first data packets of the input signal based on a modulation scheme for a receiver of the downlink signal; in a second one or more processing blocks in the one or more processors in parallel with the first one or more processing blocks, performing a second modulation operation on second data packets of the input signal based on the modulation scheme; and generating a waveform as the downlink signal based on performing the first and second modulation operations.
1. A method for modulating a satellite downlink signal representative of a communication signal, the method comprising:
receiving an input signal in the form of a digital bit stream;
splitting the digital bit stream into data packets, each of the data packets including an overlap of data from an adjacent packet;
in a first one or more processing blocks in a one or more processors,
performing a first modulation operation on first data packets of the data packets based on a modulation scheme for a receiver of the downlink signal to create modulated first data packets;
in a second one or more processing blocks in the one or more processors in parallel with performing the first modulation operation in the first one or more processing blocks,
performing a second modulation operation on second data packets of the data packets based on the modulation scheme for the receiver of the downlink signal to create modulated second data packets, wherein the second modulation operation is the same as the first modulation operation;
combining the modulated first data packets and the modulated second data packets in an order which corresponds to the order in which the digital bit stream was received; and
generating a waveform as the downlink signal based on the combined modulated first data packets and the modulated second data packets.
2. The method of claim 1 , wherein the first one or more processing blocks comprises a first one or more central processing unit (CPU) cores and the second one or more processing blocks comprises a second one or more CPU cores.
3. The method of claim 1 , wherein the one or more processors comprises a plurality of processors, wherein the first one or more processing blocks are comprised in a first processor of the plurality and the second one or more processing blocks are comprised in a second processor of the plurality of processors.
4. The method of claim 1 , wherein the one or more processors comprises a single processor comprising the first one or more processing blocks and the second one or more processing blocks.
5. The method of claim 1 , wherein the first one or more processing blocks and the second one or more processing blocks operate in parallel.
6. The method of claim 1 , wherein the first modulation operation comprises a first one or more functions, wherein the first one or more processing blocks comprises a first plurality of processing blocks, wherein at least two of the first one or more functions are performed by the separate processing blocks of the first plurality of processing blocks in parallel.
7. The method of claim 6 , wherein the first one or more functions comprises at least one of:
converting the first data packets to a predetermined format that is based on the modulation scheme;
generating coding corresponding to the modulation scheme;
converting first symbol data of the first data packets to first sample data for the downlink signal;
changing the center frequency of a carrier of the first sample data; and
changing phase and frequency of the first sample data based on the modulation scheme.
8. The method of claim 6 , wherein the second modulation operation comprises a second one or more functions, wherein the second one or more processing blocks comprises a second plurality of processing blocks, wherein at least two of the second one or more functions are performed by the separate processing blocks of the second plurality of processing blocks in parallel.
9. The method of claim 8 , wherein the second one or more functions comprises at least one of:
converting the second data packets to the predetermined format that is based on the modulation scheme;
generating coding corresponding to the modulation scheme;
converting second symbol data of the second data packets to second sample data for the downlink signal;
changing the center frequency of a carrier of the second sample data; and
changing phase and frequency of the second sample data based on the modulation scheme.
10. The method of claim 1 , further comprising:
in a third one or more processing blocks in the one or more processors,
performing a third modulation operation on first outputs from the first and second modulation operation; and
in a fourth one or more processing blocks in the one or more processors in parallel with the third one or more processing blocks,
performing a fourth modulation operation on second outputs from the first and second modulation operation,
wherein the generated waveform is based on performing the third and fourth modulation operations.
11. The method of claim 1 , wherein the one or more processors are one or more general-purpose central processing units (CPU).
12. The method of claim 1 , wherein the one or more processors employ single instructions, multiple data (SIMD) techniques to achieve high throughput.
13. A system for modulating a satellite downlink signal representative of a communication signal, the system comprising:
at least one memory configured to store instructions; and
one or more processors communicatively coupled to the at least one memory, the one or more processors having a plurality of processing blocks and operable to execute the instructions to:
receive an input signal in the form of a digital bit stream;
split the digital bit stream into data packets, each of the data packets including an overlap of data from an adjacent packet;
in a first one or more processing blocks in a one or more processors,
perform a first modulation operation on first data packets of the data packets based on a modulation scheme for a receiver of the downlink signal to create modulated first data packets;
in a second one or more processing blocks in the one or more processors in parallel with performing the first modulation operation in the first one or more processing blocks,
perform a second modulation operation on second data packets of the data packets based on the modulation scheme for the receiver of the downlink signal to create modulated second data packets, wherein the second modulation operation is the same as the first modulation operation;
combining the modulated first data packets and the modulated second data packets in an order which corresponds to the order in which the digital bit stream was received; and
generate a waveform as the downlink signal based on the combined modulated first data packets and the modulated second data packets.
14. The system of claim 13 , wherein the first one or more processing blocks comprises a first one or more central processing unit (CPU) cores and the second one or more processing blocks comprises a second one or more CPU cores.
15. The system of claim 13 , wherein the one or more processors comprises a plurality of processors, wherein the first one or more processing blocks are comprised in a first processor of the plurality and the second one or more processing blocks are comprised in a second processor of the plurality of processors.
16. The system of claim 13 , wherein the one or more processors comprises a single processor comprising the first one or more processing blocks and the second one or more processing blocks.
17. The system of claim 13 , wherein the first one or more processing blocks and the second one or more processing blocks operate in parallel.
18. The system of claim 13 , wherein the one or more processors are one or more general-purpose central processing units (CPU).
19. The system of claim 13 , wherein the one or more processors employ single instructions, multiple data (SIMD) techniques to achieve high throughput.
20. An apparatus for modulating a satellite downlink signal representative of a communication signal, the apparatus comprising:
a means for receiving an input signal in the form of a digital bit stream;
means for splitting the digital bit stream into data packets, each of the data packets including an overlap of data from an adjacent packet;
one or more means for performing a first modulation operation on first data packets of the data packets based on a modulation scheme for a receiver of the downlink signal to create modulated first data packets;
one or more means for performing a second modulation operation on second data packets of the data packets based on the modulation scheme for the receiver of the downlink signal, the one or more means for performing the second modulation operation operated in parallel with performing the first modulation operation in the one or more means for performing the first modulation operation and wherein the second modulation operation is the same as the first modulation operation;
means for combining the modulated first data packets and the modulated second data packets in an order which corresponds to the order in which the digital bit stream was received; and
a means for generating a waveform as the downlink signal based on the combined modulated first data packets and the modulated second data packets.