Wireless chip to chip communication with selective frequency multiplexing with different modulation schemes

Patent metadata

Field	Value
Publication number	US-12088329-B2
Application number	US-202017131866-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Dec 23, 2020
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

A transmitter for chip to chip communication may include a modulator and a transmit frequency converter. The modulator may modulate a first received signal according to a first modulation scheme. The modulator may also modulate a second received signal according to a second modulation scheme. The transmit frequency converter may center the first received signal on a first frequency that does not comprise a phase within a radio frequency (RF) domain to generate a first centered signal. The transmit frequency converter may also center the second received signal on a second frequency that comprises a phase within the frequency band to generate a second centered signal. The second centered signal may be orthogonal to the first centered signal. A frequency gap may be positioned between the first centered signal and the second centered signal within the frequency band.

First claim

What is claimed is:

1. A transmitter for chip to chip communication, the transmitter comprising:
a modulator configured to:
modulate a first received signal according to a first modulation scheme; and
modulate a second received signal according to a second modulation scheme;

a transmit frequency converter configured to:
center the first received signal on a first frequency that does not comprise a phase within a frequency band to generate a first centered signal; and
center the second received signal on a second frequency that comprises a phase within the frequency band to generate a second centered signal, the second centered signal being orthogonal to the first centered signal and a frequency gap being positioned between the first centered signal and the second centered signal within the frequency band.

2. The transmitter of claim 1 further comprising:
a mixer configured to generate a transmit signal based on a sum of the first centered signal and the second centered signal; and
a channel element configured to wirelessly transmit the transmit signal.

3. The transmitter of claim 1 , wherein the transmit frequency converter is further configured to:
determine a number of signals to be transmitted by the transmitter; and
divide the frequency band by the number of signals to be transmitted by the transmitter, wherein the first frequency and the second frequency are positioned at frequencies that are equal to different integer multiples of a quotient of the frequency band divided by the number of signals to be transmitted by the transmitter.

4. The transmitter of claim 1 , wherein the first frequency is zero gigahertz.

5. The transmitter of claim 1 , wherein the second modulation scheme comprises a higher bit resolution than the first modulation scheme.

6. A receiver for chip to chip communication, the receiver comprising:
a receive frequency converter configured to:
convert a first received signal at a first frequency within a frequency band to a third frequency within the frequency band that is different than the first frequency, the first received signal modulated according to a first modulation scheme and comprising data; and
convert a second received signal at a second frequency within the frequency band to a fourth frequency within the frequency band that is different than the second frequency, the second received signal modulated according to a second modulation scheme and comprising data, the second received signal being orthogonal to the first received signal, and a frequency gap being positioned between the first received signal and the second received signal within the frequency band; and

a demodulator configured to:
demodulate the first received signal at the third frequency according to the first modulation scheme to recover the data within the first received signal; and
demodulate the second received signal at the fourth frequency according to the second modulation scheme to recover the data within the second received signal.

7. The receiver of claim 6 further comprising an amplifier configured to:
receive a receive signal comprising a first portion and a second portion, the first portion modulated according to the first modulation scheme and the second portion modulated according to the second modulation scheme;
generate the first received signal at the first frequency based on the first portion; and
generate the second received signal at the second frequency based on the second portion.

8. The receiver of claim 6 further comprising a sample and hold filter configured to:
receive the first received signal at the third frequency and the second received signal at the fourth frequency; and
filter the first received signal the third frequency and the second received signal at the fourth frequency.

9. The receiver of claim 6 , wherein the first received signal comprises a first bandwidth and the second received signal comprises a second bandwidth, wherein the frequency gap between the first bandwidth and the second bandwidth is sized based on the first bandwidth, the second bandwidth, and the frequency band.

10. The receiver of claim 9 , wherein the first bandwidth and the second bandwidth are determined according to:

B
⁢
W

x
-
1

in which x is equal to a number of carriers within the frequency band and BW is equal to a bandwidth of the frequency band.

11. The receiver of claim 6 , wherein the first frequency is zero gigahertz.

12. The transceiver of claim 6 , wherein the second modulation scheme comprises a higher bit resolution than the first modulation scheme.

13. A transceiver for chip to chip communication, the transceiver comprising:
a transmitter comprising:
a modulator configured to:
modulate a first transmit (tx) signal according to a first modulation scheme; and
modulate a second tx signal according to a second modulation scheme;

a transmit frequency converter configured to:
center the first tx signal on a first frequency that does not comprise a phase within a frequency band to generate a first centered signal; and
center the second signal on a second frequency that comprises a phase within the frequency band to generate a second centered signal, the second centered signal being orthogonal to the first centered signal and a frequency gap being positioned between the first centered signal and the second centered signal within the frequency band; and

a receiver comprising:
a receive frequency converter configured to:
convert a first receive (rx) signal at the first frequency within the frequency band to a third frequency within the frequency band that is different than the first frequency, the first rx signal modulated according to the first modulation scheme and comprising data; and
convert a second rx signal at the second frequency within the frequency band to a fourth frequency within the frequency band that is different than the second frequency, the second rx signal modulated according to the second modulation scheme and comprising data, the second rx signal being orthogonal to the first rx signal, and a frequency gap being positioned between the first rx signal and the second rx signal within the frequency band; and

a demodulator configured to:
demodulate the first rx signal at the third frequency according to the first modulation scheme to recover the data within the first rx signal; and
demodulate the second rx signal at the fourth frequency according to the second modulation scheme to recover the data within the second rx signal.

14. The transceiver of claim 13 further comprising:
a mixer configured to generate a tx signal based on a sum of the first centered signal and the second centered signal; and
a channel element configured to wirelessly transmit the tx signal.

15. The receiver of claim 14 further comprising a channel element configured to wirelessly receive the receive signal.

16. The transceiver of claim 13 , wherein the transmit frequency converter is further configured to:
determine a number of signals to be transmitted by the transmitter; and
divide the frequency band by the number of signals to be transmitted by the transmitter, wherein the first frequency and the second frequency are positioned at frequencies that are equal to different integer multiples of a quotient of the frequency band divided by the number of signals to be

Assignees

• Intel Corp

Inventors

• Rahman Mehnaz
• Orhan Oner
• Nikopour Hosein

Classifications

• H04B1/0067

  with one or more circuit blocks in common for different bands · CPC title

• H04B1/0483

  Transmitters with multiple parallel paths · CPC title

• H04B2001/0491

  with frequency synthesizers, frequency converters or modulators · CPC title

• H04B1/0057 Primary

  using diplexing or multiplexing filters for selecting the desired band · CPC title