Method for enhancing bluetooth transmission speed and robustness of emitting end and receiving end of communication system

Abstract

A method for enhancing the Bluetooth transmission speed and robustness of an emitting end and a receiving end is provided. The method is utilized in a system having an emitting end and a receiving end, wherein at least one of the emitting and receiving ends is provided with BlueSPEED-PSK or BlueSPEED-DELTA-PSK (adapted Gray coded D16PSK) modulation with optional FEC.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will become more fully understood from the detailed description given below for illustration only, and thus is not limitative of the present invention, wherein:

FIG. 1A is a system architect diagram of the first embodiment of the present invention;

FIG. 1B is a system architect diagram of the second embodiment of the present invention;

FIG. 1C is a system architect diagram of the third embodiment of the present invention;

FIG. 1D is a system architect diagram related the present invention;

FIG. 2A is a flowchart showing the steps of a method for enhancing the Bluetooth transmission speed and robustness of an emitting end and a receiving end of a communication system according to the present invention;

FIG. 2B is a flowchart showing the steps of the first embodiment of the present invention;

FIG. 2C is a flowchart showing the steps of the second embodiment of the present invention;

FIG. 2D is a flowchart showing the steps of the third embodiment of the present invention;

FIG. 2E is a flowchart showing the steps of a procedure related to the present invention;

FIG. 3A is a table indicating the relations between the bits and phases of the symbols of Bluetooth communications utilizing the modulation technology of D8PSK;

FIG. 3B is a symbol distribution constellation of Bluetooth communications obtained by utilizing the modulation technology of D8PSK;

FIG. 4A is a table indicating the relations between the bits and phases of the symbols of the modulation technology of D16PSK;

FIG. 4B is a symbol distribution constellation obtained by utilizing the modulation technology of D16PSK;

FIG. 5 is a superimposed symbol distribution constellation of the symbol distribution constellations of FIGS. 3B and 4B;

FIG. 6A is a schematic diagram of symbol transmission according to the first embodiment of the present invention;

FIG. 6B is a schematic diagram of symbol transmission according to the second embodiment of the present invention;

FIG. 6C is a schematic diagram of symbol transmission according to the third embodiment of the present invention.

FIG. 6D is a schematic diagram of symbol transmission related to the present invention.

FIG. 7A is a table indicating the relations between the bits and phases of the symbols of the BlueSPEED modulation technology of BlueSPEED-PSK (D16PSK rotated by −π/16);

FIG. 7B is a symbol distribution constellation of the modulation technology of BlueSPEED-PSK;

FIG. 8A is a symbol distribution constellation for the symbols of BlueSPEED communications utilizing BlueSPEED-PSK modulation, and the symbol distribution constellation of D8PSK symbols together with the decision bounderies valid for D8PSK reception and the bit combinations corresponding to each sector between the bounderies;

FIG. 8B is a symbol distribution constellation for the symbols of BlueSPEED communications utilizing BlueSPEED-PSK modulation, and the symbol distribution constellation of D8PSK symbols together with the decision bounderies valid for BlueSPEED-PSK reception;

FIG. 9A is a symbol distribution constellation for the symbols of the BlueSPEED modulation technology of BlueSPEED-DELTA-PSK;

FIG. 9B is an enlarged view of a portion of the BlueSPEED-DELTA-PSK symbol distribution constellation shown in FIG. 9A;

FIG. 9C is a table indicating example relations between the bits and phases of the symbols of BlueSPEED-DELTA-PSK using Delta=½;

FIG. 10A is a symbol distribution constellation for the symbols of BlueSPEED communications utilizing BlueSPEED-DELTA-PSK modulation (Delta=½), and the symbol distribution constellation of D8PSK symbols together with the decision bounderies valid for D8PSK reception; and

FIG. 10B is a symbol distribution constellation for the symbols of BlueSPEED communications utilizing BlueSPEED-DELTA-PSK modulation for Delta=½, and the symbol distribution constellation for the symbols of BlueSPEED communications utilizing BlueSPEED-DELTA-PSK modulation for Delta=0 together with the decision bounderies valid for BlueSPEED-PSK/BlueSPEED-DELTA-PSK reception.

Claims

1. A method for enhancing the Bluetooth transmission speed and robustness of an emitting end and a receiving end of a communication system, wherein at least one of the emitting and receiving ends is provided with BlueSPEED technology: BlueSPEED-PSK/BlueSPEED-DELTA-PSK with optional FEC.

2. The method for enhancing the Bluetooth transmission speed and robustness of an emitting end and a receiving end of a communication system as claimed in claim 1, wherein in case that BlueSPEED technology is utilized at the emitting and receiving ends, the method includes the following steps: modulating a bit stream of a plurality of bits at the emitting end, comprising the following steps: applying a (4-bit) CRC to a block a bits formed by every 4th bit in the bit stream;forming 4-bit symbols sequentially from every consecutive 4 bits in the bit stream;searching and obtaining the phase information corresponding to the respective 4-bit symbols according to the BlueSPEED-PSK or BlueSPEED-DELTA-PSK; andforming data packets containing the respective phase information;transmitting the data packets at the emitting end;receiving the data packets at the receiving end; andde-modulating the data packets at the receiving end, including the following steps: reading the respective phase information in the data packet;searching and obtaining the 4-bit symbols corresponding to the respective phase information according to BlueSPEED-PSK or BlueSPEED-DELTA-PSK;interpreting the 4 bits contained in the respective 4-bit symbols;identifying BlueSPEED-PSK and BlueSPEED-DELTA-PSK transmission using the (4-bit) CRC applied to blocks of bits formed by every 4th bit in the bit stream

3. The method for enabling Bluetooth transmission of an emitting end and a receiving end of a communication system as claimed in claim 1, wherein in case that BlueSPEED technology (BlueSPEED-PSK or BlueSPEED-DELTA-PSK modulation) is utilized at the emitting end, and the technology of D8PSK is utilized at the receiving end, the method includes the following steps: modulating a bit stream of a plurality of bits at the emitting end, comprising the following steps: applying a (4-bit) CRC to a block a bits formed by every 4th bit in the bit stream;forming 4-bit symbols sequentially from every consecutive 4 bits in the bit stream;searching and obtaining the phase information corresponding to the respective 4-bit symbols according to the BlueSPEED-PSK or BlueSPEED-DELTA-PSK; andforming data packets containing the respective phase information;transmitting the data packets at the emitting end;receiving the data packets at the receiving end; andde-modulating the data packets at the receiving end, including the following steps: reading the respective phase information in the data packet; searching and obtaining the 3-bit symbols corresponding to the respective phase information according to the D8PSK, the respective 3-bit symbols are composed of 3 bits; andinterpreting the 3 bits contained in the respective 3-bit symbols.wherein the 3 bits in the respective 3-bit symbols are the same as the 3 MSB bits of the respective 4-bit symbols transmitted by the emitting end.

4. The method for enabling Bluetooth transmission of an emitting end and a receiving end of a communication system as claimed in claim 1, wherein in case that the technology of D8PSK is utilized at the emitting end and the BlueSPEED technology (BlueSPEED-PSK or BlueSPEED-DELTA-PSK demodulation) is utilized at the receiving end of a communication system, the method of the invention includes the following steps: modulating a bit stream of a plurality of bits at the emitting end, comprising the following steps: forming 3-bit symbols sequentially from every consecutive 3 bits in the bit stream;searching and obtaining the phase information corresponding to the respective 3-bit symbols according to the D8PSK; andforming data packets containing the respective phase information;transmitting the data packets at the emitting end;receiving the data packets at the receiving end; andde-modulating the data packets at the receiving end, including the following steps: reading the respective phase information in the data packet; searching and obtaining the 4-bit symbols corresponding to the respective phase information according to BlueSPEED-PSK or BlueSPEED-DELTA-PSK;interpreting the 4 bits contained in the respective 4-bit symbols; identifying BlueSPEED-PSK and BlueSPEED-DELTA-PSK transmission using the (4-bit) CRC applied to blocks of bits formed by every 4th bit in the bit streamobtaining 3 MSB bits from 4-bit symbolswherein the obtained 3 bits from 4-bit symbols are the same as the 3 bits of the respective 3-bit symbols transmitted by the emitting end.

5. An adapted (rotated by −π/16) Gray-coded D16PSK modulation called BlueSPEED-PSK as used in claim 2.

6. An adapted (rotated by −π/16) Gray-coded D16PSK modulation with an additional parameter Delta used for position adjustement of constellation points called BlueSPEED-DELTA-PSK as used in claim 2, wherein the position adjustment sets constellation points having the same 3 MSB bits closer to each other by a fraction of π/16. The fraction (Delta) has a valid range of all fractional numbers between 0 and 1, including 0 and 1.

7. Optional use of FEC for the additional information (Bit 1 bits) transmitted by the emitting end as used in claim 2, wherein use of BCH(48,36,2) is for the FEC.

8. An adapted (rotated by −π/16) Gray-coded D16PSK modulation called BlueSPEED-PSK as used in claim 3.

9. An adapted (rotated by −π/16) Gray-coded D16PSK modulation with an additional parameter Delta used for position adjustement of constellation points called BlueSPEED-DELTA-PSK as used in claim 3, wherein the position adjustment sets constellation points having the same 3 MSB bits closer to each other by a fraction of π/16. The fraction (Delta) has a valid range of all fractional numbers between 0 and 1, including 0 and 1.

10. Optional use of FEC for the additional information (Bit 1 bits) transmitted by the emitting end as used in claim 3, wherein use of BCH(48,36,2) is for the FEC.