TRANSMITTED REFERENCE SIGNALING SCHEME

• US 20100020851A1
• Filed: 10/01/2009
• Published: 01/28/2010
• Est. Priority Date: 11/15/2006
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Lee, Chong U., Ekbal, Amal, Julian, David Jonathan
• Application Number:
  US12/571,908
• Publication Number:
  US 20100020851A1
• Time in Patent Office: Days
• US Class Current: 375/130
• CPC Class Codes: H04B 1/7176 Data mapping, e.g. modulation

Abstract

A signaling scheme employs transmitted reference pulses having varying phase. The phase of the reference pulses may be varied in a random manner or in accordance with a data stream. In some aspects a transmitter modulates the phase of the reference pulses to encode an additional data stream in a transmitted reference signal. In some aspects these techniques are employed in a heterogeneous network including coherent and non-coherent receivers. In some aspects these techniques may be employed in an ultra-wide band system.

Claims

1-44. -44. (canceled)

45. A method of processing a transmitted reference signal including reference pulses and data pulses, comprising:

receiving reference pulses and data pulses of a transmitted reference signal; and

demodulating data transmitted in the transmitted reference signal, at least in part, in accordance with changes in phase of the reference pulses.

46. The method of claim 45, wherein the changes in phase further comprise changes in polarity.

47. The method of claim 45, wherein receiving the reference pulses and the data pulses further comprises receiving a reference pulse and, after a delay period, receiving an associated data pulse.

48. The method of claim 45, wherein demodulating the data further comprises detecting random or pseudo-random changes in the phase of the reference pulses.

49. The method of claim 45, wherein the transmitted reference signal further comprises an ultra-wide band signal having a fractional bandwidth on the order of 20% or more or having a bandwidth on the order of 500 MHz or more.

50. The method of claim 45, wherein demodulating the data further comprises decoding, at least in part, the reference pulses to extract incremental data redundancy from the transmitted reference signal.

51. The method of claim 50, further comprising decoding, at least in part, the data pulses to extract the incremental data redundancy from the transmitted reference signal.

52. The method of claim 50, wherein a coherent receiver performs the decoding.

53. The method of claim 50, further comprising communicating with a transmitter to invoke a capability of the transmitter to transmit the transmitted reference signal with the incremental data redundancy.

54. The method of claim 45, wherein demodulating the data further comprises decoding, at least in part, the reference pulses to extract an additional data stream from the transmitted reference signal.

55. The method of claim 54, further comprising decoding, at least in part, the data pulses to extract the additional data stream from the transmitted reference signal.

56. The method of claim 54, wherein a coherent receiver performs the decoding.

57. The method of claim 54, further comprising communicating with a transmitter to invoke a capability of the transmitter to transmit the transmitted reference signal with the additional data stream.

58. The method of claim 45, wherein the method is performed in at least one of the group consisting of:

a headset, a microphone, a biometric sensor, a heart rate monitor, a pedometer, an EKG device, a user I/O device, a watch, a remote control, and a tire pressure monitor.

59. An apparatus for processing a transmitted reference signal including reference pulses and data pulses, comprising:

a receiver adapted to receive reference pulses and data pulses of a transmitted reference signal; and

a demodulator adapted to demodulate data transmitted in the transmitted reference signal, at least in part, in accordance with changes in phase of the reference pulses.

60. The apparatus of claim 59, wherein the changes in phase further comprise changes in polarity.

61. The apparatus of claim 59, wherein the demodulator is further adapted to detecting random or pseudo-random changes in the phase of the reference pulses.

62. The apparatus of claim 59, wherein the transmitted reference signal further comprises an ultra-wide band signal having a fractional bandwidth on the order of 20% or more or having a bandwidth on the order of 500 MHz or more.

63. The apparatus of claim 59, further comprising a decoder adapted to decode, at least in part, the reference pulses to extract incremental data redundancy from the transmitted reference signal.

64. The apparatus of claim 63, wherein the decoder is further adapted to decode, at least in part, the data pulses to extract the incremental data redundancy from the transmitted reference signal.

65. The apparatus of claim 63, wherein the apparatus is implemented in a coherent receiver.

66. The apparatus of claim 63, further comprising a communication module adapted to communicate with a transmitter to invoke a capability of the transmitter to transmit the transmitted reference signal with the incremental data redundancy.

67. The apparatus of claim 59, further comprising a decoder adapted to decode, at least in part, the reference pulses to extract an additional data stream from the transmitted reference signal.

68. The apparatus of claim 67, wherein the decoder is further adapted to decode, at least in part, the data pulses to extract the additional data stream from the transmitted reference signal.

69. The apparatus of claim 67, wherein the apparatus is implemented in a coherent receiver.

70. The apparatus of claim 67, further comprising a communication module adapted to communicate with a transmitter to invoke a capability of the transmitter to transmit the transmitted reference signal with the additional data stream.

71. (canceled)

72. An apparatus for processing a transmitted reference signal including reference pulses and data pulses, comprising:

means for receiving reference pulses and data pulses of a transmitted reference signal; and

means for demodulating data transmitted in the transmitted reference signal, at least in part, in accordance with changes in phase of the reference pulses.

73-84. -84. (canceled)

85. A computer-program product for processing a transmitted reference signal including reference pulses and data pulses comprising:

a computer-readable medium comprising codes for causing a computer to;

receive reference pulses and data pulses of a transmitted reference signal; and

demodulate data transmitted in the transmitted reference signal, at least in part, in accordance with changes in phase of the reference pulses.

86. (canceled)