Communication system, including transmitting and receiving apparatus using a multi-carrier signal

• US 5,966,644 A
• Filed: 05/27/1997
• Issued: 10/12/1999
• Est. Priority Date: 05/27/1996
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Suzuki, Mitsuhiro
• Primary Examiner(s): Vu, Huy D.
• Assistant Examiner(s): LEE, CHI HO A
• Application Number:
  US08/863,864
• Time in Patent Office: 868 Days
• Field of Search: 375/219, 375/260, 375/327, 375/85, 375/86, 375/258, 375/259, 375/264, 455/76, 370/314, 370/324, 370/347, 370/350, 370/518, 370/480, 370/481, 370/541
• US Class Current: 455/76
• CPC Class Codes: H04B 7/2621 using frequency division multiple access [FDMA] H04B7/2615 takes precedence
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601

Abstract

A transmitting apparatus according to the present invention in communication resources using a multi-carrier signal in which subcarriers of a predetermined number are allocated with a predetermined frequency separation, includes a reference signal source for generating a reference signal with a predetermined frequency (f₀), a first signal converter for generating a first clock signal (having a frequency f₁) from the reference signal, a second signal converter for generating a second clock signal (having a frequency f₂) from the reference signal, a radio frequency signal generator for generating signals which have separation frequencies of the frequency of the first clock signal, and a transmission signal processor for processing a transmission signal with the second block signal as a reference of the processing.

Claims

1. A transmitting apparatus using a multi-carrier signal in which subcarriers of a predetermined number are allocated with a predetermined frequency separation, comprising:

a reference signal source for generating a reference signal with a predetermined frequency (f₀);

first signal converting means for generating a first clock signal having a first frequency (f₁) from said reference signal;

second signal converting means for generating a second clock signal having a second frequency (f₂) from said reference signal;

radio frequency signal generating means for generating signals which have separation frequencies of the first frequency of said first clock signal;

transmission signal processing means for processing a transmission signal with said second clock signal as a reference of said processing;

third signal converting means for generating a third clock signal having a third frequency (f₃) from said reference signal;

fourth signal converting means for generating a fourth clock signal having a fourth frequency (f₄) from said reference signal;

time division signal generating means for generating signals with separated timings of slots each of which has a timing based on an inverse of the third frequency of said third clock signal; and

audio signal processing means for processing an audio signal with said fourth clock signal as an audio processing reference signal.

2. The transmitting apparatus according to claim 1, wherein said transmission signal processing means generates a multi-carrier signal having one of said subcarriers whose number is n from said second clock signal having a second frequency (f₂) and a frequency used for separation of said subcarriers is f₂ /n.

3. The transmitting apparatus according to claim 1, wherein said first frequency f₁, is 150 kHz and said second frequency f₂, is 200 kHz.

4. The transmitting apparatus according to claim 1, wherein said third frequency f₃ is 5 kHz and said fourth frequency f₄ is 8 kHz.

5. The transmitting apparatus according to claim 2, wherein said number n is set to 32.

6. A receiving apparatus using a multi-carrier signal in which subcarriers of a predetermined number are allocated with a predetermined frequency separation, comprising:

a reference signal source for generating a reference signal having a predetermined frequency (f₀);

first signal converting means for generating a first clock signal having a first frequency (f₁) from said reference signal;

second signal converting means for generating a second clock signal having a second frequency (f₂) from said reference signal;

radio frequency signal generating means for generating signals having separate frequencies of the first frequency of said first clock signal;

received signal processing means for processing a received signal with said second clock signal as a reference of said processing;

third signal converting means for generating a third clock signal having a third frequency (f₃) from said reference signal;

fourth signal converting means for generating a fourth clock signal having a fourth frequency (f₄) from said reference signal;

time division signal processing means for processing signals with separated timings of slots each of which has a timing based on an inverse of the third frequency of said third clock signal; and

audio signal processing means for processing an audio signal with said fourth clock signal as an audio processing reference signal.

7. The receiving apparatus according to claim 6, wherein said received signal processing means processes a received multi-carrier signal which has the subcarriers whose number is n by using said second clock signal having a second frequency (f₂) and a frequency used for separation of said subcarriers is f₂ /n.

8. The receiving apparatus according to claim 6, wherein said first frequency f₁, is 150 kHz and said second frequency f₂, is 200 kHz.

9. The receiving apparatus according to claim 6, wherein said third frequency f₃ is 5 kHz and said fourth frequency f₄, is 8 kHz.

10. The receiving apparatus according to claim 7, wherein said number n is set to 32.

11. A multiple access transmitting apparatus using a multi-carrier signal in which subcarriers of a predetermined number are allocated with a predetermined frequency separation, comprising:

a reference signal source for generating a reference signal with a predetermined frequency (f₀);

first signal converting means for generating a first clock signal having a first frequency (f₁) from said reference signal;

second signal converting means for generating a second clock signal having a second frequency (f₂) from said reference signal;

radio frequency signal generating means for generating signals which have separation frequencies of the first frequency of said first clock signal;

transmission signal processing means for processing a transmission signal with said second clock signal as a reference of said processing;

multiplex means for multiplexing a plurality of signals;

third signal converting means for generating a third clock signal having a third frequency (f₃) from said reference signal;

fourth signal converting means for generating a fourth clock signal having a fourth frequency (f₄) from said reference signal;

time division signal generating means for generating signals with separated slot timings each of which has a timing based on an inverse of the third frequency of said third clock signal; and

audio signal processing means for processing an audio signal with said fourth clock signal as an audio processing reference signal.

12. The multiple access transmitting apparatus according to claim 11, wherein said transmission signal processing means generates a multi-carrier signal having the subcarriers whose number is n from said second clock signal having a second frequency (f₂) and a frequency used for separation of said subcarriers is f₂ /n.

13. The multiple access transmitting apparatus according to claim 11, wherein said first frequency f₁ is 150 kHz and said second frequency f₂ is 200 kHz.

14. The multiple access transmitting apparatus according to claim 11, wherein said third frequency f₃ is 5 kHz and said fourth frequency f₄ is 8 kHz.

15. The multiple access transmitting apparatus according to claim 12, wherein said number n is set to 32.

16. A multiple access receiving apparatus using a multi-carrier signal in which subcarriers of a predetermined number are allocated with a predetermined frequency separation, comprising:

a reference signal source for generating a reference signal having a predetermined frequency (f₀);

first signal converting means for generating a first clock signal having a first frequency (f₁) from said reference signal;

second signal converting means for generating a second clock signal having a second frequency (f₂) from said reference signal;

radio frequency signal generating means for generating signals having separate frequencies of the first frequency of said first clock signal;

received signal processing means for processing a received signal with said second clock signal as a reference of said processing;

de-multiplexing means for generating a plurality of series of codes from one series of signals;

third signal converting means for generating a third clock signal having a third frequency (f₃) from said reference signal;

fourth signal converting means for generating a fourth clock signal having a fourth frequency (f₄) from said reference signal;

time division signal processing means for processing signals with separated slot timings each of which has a timing based on an inverse of the third frequency of said third clock signal; and

audio signal processing means for processing an audio signal with said fourth clock signal as an audio processing reference signal.

17. The multiple access receiving apparatus according to claim 16, wherein said received signal processing means processes a received multi-carrier signal which has the subcarriers whose number is n by using said second clock signal having a second frequency (f₂) and a frequency used for separation of said subcarriers is f₂ /n.

18. The multiple access receiving apparatus according to claim 16, wherein said first frequency f₁ is 150 kHz and said second frequency f₂, is 200 kHz.

19. The multiple access receiving apparatus according to claim 16, wherein said third frequency f₃ is 5 kHz and said fourth frequency f₄ is 8 kHz.

20. The multiple access receiving apparatus according to claim 17, wherein said number n is set to 32.