Bit rate compression for signal transmission
Various antennas may benefit from improved signaling. For example, it may be helpful for a signal in a high occupied bandwidth environment to be compressed using a block floating point format, which can also help to reduce power consumption. A method may include separating an incoming signal at a digital front end or a converter into two alternating signals comprising a coarse signal and a fine signal. The method may also include transmitting the coarse signal and the fine signal from the digital front end to the converter or from the converter to the digital front end. The coarse signal and the fine signal may be combined to generate an approximation of the incoming signal.
1. An apparatus comprising:
at least one memory comprising computer program code; and
at least one processor;
wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
separate an incoming signal at a digital front end or a converter into two alternating signals comprising a coarse signal and a fine signal, wherein the coarse signal is generated based on a polyphase of a signal; and
transmit the coarse signal and the fine signal from the digital front end to the converter or from the converter to the digital front end, wherein a quantized polyphase is used for the transmitting of the coarse signal, and wherein a combination of the coarse signal and the fine signal generates an approximation of the incoming signal.
2. The apparatus according to claim 1 , wherein the coarse signal and the fine signal are combined in a block floating point format comprising a common format based at least on a coarse mantissa, a fine mantissa, or a common exponent.
3. The apparatus according to claim 1 , wherein another polyphase is used to generate the fine signal.
4. The apparatus according to claim 3 , wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
generate a correction signal for the fine signal based on at least one of the fine signal, the coarse signal, or a quantized coarse signal, wherein the correction signal reduces in-band noise.
5. The apparatus according to claim 4 , wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
calculate the correction signal by subtracting the coarse signal from the quantized coarse signal, wherein the coarse signal is non-quantized;
define an error signal based on the calculating of the correction signal; and
filter the error signal by scaling the error signal with the another polyphase of a half band filter; and
subtract the filtered error signal from the fine signal.
6. The apparatus according to claim 5 , wherein the coarse block signal is delayed.
7. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
filter the incoming signal through a high pass filter.
8. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
filter the combined coarse signal and fine signal through a low pass filter.
9. The apparatus according to claim 1 , wherein the combined signal of the coarse signal and the fine signal is decompressed at the converter or the digital front end.
10. A method comprising:
separating an incoming signal at a digital front end or a converter into two alternating signals comprising a coarse signal and a fine signal, wherein the coarse signal is generated based on a polyphase of a signal; and
transmitting the coarse signal and the fine signal from the digital front end to the converter or from the converter to the digital front end, wherein a quantized polyphase is used for the transmitting of the coarse signal, and wherein a combination of the coarse signal and the fine signal generates an approximation of the incoming signal.
11. The method according to claim 10 , wherein another polyphase is used to generate the fine signal.
12. The method according to claim 11 , further comprising:
generating a correction signal for the fine signal based on at least one of the fine signal, the coarse signal, and a quantized coarse signal, wherein the correction signal reduces in-band noise.
13. The method according to claim 12 , further comprising:
calculating the correction signal by subtracting the coarse signal from the quantized coarse signal, wherein the coarse signal is non-quantized;
defining an error signal based on the calculating of the correction signal; and
filtering the error signal by scaling the error signal with the another polyphase of a half band filter; and
subtracting the filtered error signal from the fine signal.
14. The method according to claim 10 , wherein the coarse signal and the fine signal are combined in an interface between the digital front end and the converter, and wherein the interface is a joint electron device engineering council standard interface.
15. The method according to claim 10 , further comprising:
filtering the incoming signal through a high pass filter.
16. The method according to claim 10 , further comprising:
filtering the combined coarse signal and fine signal through a low pass filter.
17. The method according to claim 10 , wherein the combined signal of the coarse signal and the fine signal is decompressed at the converter.
18. A non-transitory computer-readable medium encoding instructions that, when executed in hardware, perform a process, wherein the process comprises at least one of:
separating an incoming signal at a digital front end or a converter into two alternating signals comprising a coarse signal and a fine signal, wherein the coarse signal is generated based on a polyphase of a signal; and
transmitting the coarse signal and the fine signal from the digital front end to the converter or from the converter to the digital front end, wherein a quantized polyphase is used for the transmitting of the coarse signal, and wherein a combination of the coarse signal and the fine signal generates an approximation of the incoming signal.