Parallel packet transmission

• US 20110164623A1
• Filed: 07/06/2009
• Published: 07/07/2011
• Est. Priority Date: 07/07/2008
• Status: Abandoned Application

• Current Assignee: Commonwealth Scientific & Industrial Research Organisation (Commonwealth Of Australia As Represented By Department Of Industry, Innovation, Climate Change, Science, Research And Tertiary Education)
• Original Assignee: Commonwealth Scientific & Industrial Research Organisation (Commonwealth Of Australia As Represented By Department Of Industry, Innovation, Climate Change, Science, Research And Tertiary Education)
• Inventors: Huang, Xiaojing, Guo, Yingjie Jay
• Application Number:
  US12/746,908
• Publication Number:
  US 20110164623A1
• Time in Patent Office: Days
• US Class Current: 370/474
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path

Abstract

Disclosed is a modulation method, comprising dividing a series of data bits into a plurality of contiguous blocks; composing each block into a corresponding parallel packet; mapping one or more bits from each parallel packet into a corresponding data symbol; and modulating the data symbols onto respective subcarriers of an OFDM symbol.

Claims

1. A modulation method comprising:

dividing a series of data bits into a plurality of contiguous blocks;

composing each said block into a corresponding parallel packet;

mapping one or more bits from each said parallel packet into a corresponding data symbol; and

modulating said data symbols onto respective subcarriers of an OFDM symbol.

2. The method of claim 1, further comprising transmitting said OFDM symbol.

3. The method of claim 1, further comprising repeating said mapping and modulating until all said bits in said series have been mapped.

4. The method of claim 1, further comprising:

receiving channel state information for each of said subcarriers from a destination of said series of data bits;

wherein said mapping is dependent on said received channel state information for the corresponding said subcarrier.

5. The method of claim 2, further comprising:

receiving acknowledgement information for each said parallel packet from a destination of said series of data bits; and

re-transmitting the block composed into a parallel packet that said received acknowledgement information indicated was erroneously received.

6. The method of claim 1, further comprising:

dividing a further series of data bits into a plurality of contiguous blocks;

composing each said block into a corresponding parallel packet;

mapping one or more bits from each said parallel packet into a corresponding data symbol; and

modulating said data symbols onto further respective subcarriers of said OFDM symbol.

7. The method of claim 1, further comprising:

dividing said series of data bits into a further plurality of contiguous blocks;

composing each said further block into a corresponding parallel packet;

mapping one or more bits from each said parallel packet into a corresponding data symbol;

modulating said data symbols onto respective subcarriers of a further OFDM symbol.

8. The method of claim 7, further comprising space precoding said OFDM symbol and said further OFDM symbol for transmission on one or more transmit antennas.

9. A modulation method comprising:

dividing a series of data bits into a plurality of contiguous blocks;

composing each said block into a corresponding parallel packet;

mapping one or more bits from each said parallel packet into a corresponding data symbol;

modulating said data symbols onto respective subcarriers of an OFDM symbol;

mapping one or more further bits from each said parallel packet into a further corresponding data symbol; and

modulating said further data symbols onto respective subcarriers of a further OFDM symbol.

10. A demodulation method comprising:

demodulating a first predetermined number of OFDM symbols to form a second predetermined number of parallel symbol streams, each said symbol stream comprising the first predetermined number of symbols;

de-mapping each said parallel symbol stream to a corresponding packet;

decomposing each said packet into a contiguous block of a series of data bits.

11. The method of claim 10, further comprising:

generating channel state information for each said parallel symbol stream; and

transmitting said channel state information to a source of said OFDM symbols.

12. The method of claim 10, further comprising:

generating acknowledgement information for each said packet, said acknowledgement information indicating whether said packet was erroneously received; and

transmitting said acknowledgement information to a source of said OFDM symbols.

13. A modulation device comprising:

a packet composing module adapted to;

divide a series of data bits into a plurality of contiguous blocks; and

compose each said block into a corresponding parallel packet;

a data symbol mapping module adapted to map one or more bits from each said parallel packet into a corresponding data symbol; and

a modulation module adapted to modulate said data symbols onto respective subcarriers of an OFDM symbol.

14. A demodulation device comprising:

a demodulation module adapted to demodulate a first predetermined number of OFDM symbols to form a second predetermined number of parallel symbol streams, each said symbol stream comprising the first predetermined number of symbols;

a de-mapping module adapted to de-map each said parallel symbol stream to a corresponding packet;

a decomposing module adapted to decompose each said packet into a contiguous block of a series of data bits.

15. A communication system comprising:

a packet composing module adapted to;

divide a series of data bits into a plurality of contiguous blocks; and

compose each said block into a corresponding parallel packet;

a data symbol mapping module adapted to map one or more bits from each said parallel packet into a corresponding data symbol;

a modulation module adapted to modulate said data symbols onto respective subcarriers of an OFDM symbol;

a demodulation module adapted to demodulate a first predetermined number of said OFDM symbols to form a second predetermined number of parallel symbol streams, each said symbol stream comprising the first predetermined number of symbols;

a de-mapping module adapted to de-map each said parallel symbol stream to a corresponding packet; and

a decomposing module adapted to decompose each said packet into a contiguous block of a series of data bits.