Apparatus and method for transmission/reception

• US 20060203934A1
• Filed: 05/11/2006
• Published: 09/14/2006
• Est. Priority Date: 11/06/1998
• Status: Active Grant

• Current Assignee: INVT SPE LLC (SoftBank Group Corp.)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Shirasaki, Yoshimasa, Sudo, Hiroaki
• Granted Patent: US 7,760,815 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2604 Multiresolution systems by means of multiresolution subcarriers H04L27/183, H04L27/3488

Abstract

In a modulation method such as 8 PSK or a 16 PSK in which a sender device expresses a symbol by using three or more bits, important information is arranged at least at only one of the first and second bits, a receiver device extracts the important information from at least one of the first and second bits of the received signal, and thereby communication control is carried out based on the important information.

Claims

1. A transmission apparatus comprising:

a converting section that has input thereto through different routes a first information sequence comprising a plurality of bits and a second information sequence comprising a plurality of bits and that generates a sequence of bits including at least one bit of the first information sequence and at least one bit of the second information sequence; and

a modulation section that modulates the sequence of bits such that each of symbols is expressed using three or more bits,

wherein the first bits and the second bits of the symbols are comprised of the bits corresponding to the first information sequence and the bits corresponding to the second information sequence, and the more lower bits than the second bits of the symbols are comprised of bits corresponding to the second information sequence.

2. The transmission apparatus according to claim 1, wherein the bits corresponding to the first information sequence are arranged on the first bits of the symbols.

3. The transmission apparatus according to claim 1, wherein the bits corresponding to the first information sequence are arranged on the first bit and the second bit of at least one of the symbols.

4. The transmission apparatus according to claim 1, wherein the bit corresponding to the second information sequence is arranged on the second bit of at least one of the symbols.

5. The transmission apparatus according to claim 1, wherein the first information sequence is separated from all information to be transmitted.

6. The transmission apparatus according to claim 1, wherein the first information sequence is one of retransmission information and controlling information.

7. The transmission apparatus according to claim 1, wherein the first information sequence is used for an error control.

8. A base station apparatus comprising the transmission apparatus according to claim 1.

9. A communication terminal apparatus comprising the transmission apparatus according to claim 1.

16. A reception apparatus comprising:

a receiving section that receives the sequence of bits including at least one bit of the first information sequence and at least one bit of the second information sequence transmitted by the transmission apparatus according to claim 1.

10. A transmission method comprising:

inputting a first information sequence comprising a plurality of bits and a second information sequence comprising a plurality of bits through different routes;

generating a sequence of bits including at least one bit of the first information sequence and at least one bit of the second information sequence; and

modulating the sequence of bits such that each of the symbols is expressed using three or more bits,

wherein the first bits and the second bits of the symbols are comprised of the bits corresponding to the first information sequence and the bits corresponding to the second information sequence, and the more lower bits than the second bits of the symbols are comprised of bits corresponding to the second information sequence.

11. The transmission method according to claim 10, wherein the bits corresponding to the first information sequence are arranged on the first bits of the symbols.

12. The transmission method according to claim 10, wherein the bits corresponding to the first information sequence are arranged on the first bit and the second bit of at least one of the symbols.

13. The transmission method according to claim 10, wherein the bit corresponding to the second information sequence is arranged on the second bit of at least one of the symbols.

14. The transmission method according to claim 10, wherein the first information sequence is one of a retransmission information and a controlling information.

15. The transmission method according to claim 10, wherein the first information sequence is used for an error control.

17. A reception apparatus comprising:

a receiving section that receives a sequence of bits including at least one bit of a first information sequence and at least one bit of a second information sequence, the sequence of bits being modulated such that each of the symbols is expressed using three or more bits, wherein the first bits and the second bits of the symbols are comprised of the bits corresponding to the first information sequence and the bits corresponding to the second information sequence, and the more lower bits than the second bits of the symbols are comprised of bits corresponding to the second information sequence; and

a demodulating section that demodulates the sequence of bits,

wherein the demodulating section extracts the bits corresponding to the first information sequence from at least one of the first bits and the second bits of the symbols and extracts the bits corresponding to the second information sequence from both of (i) at least one of the first bits and the second bits and (ii) the more lower bits than the second bits of the symbols.

18. The reception apparatus according to claim 17, wherein the bits corresponding to the first information sequence are arranged on the first bits of the symbols.

19. A base station apparatus comprising the reception apparatus according to claim 17.

20. A communication terminal apparatus comprising the reception apparatus according to claim 17.