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US 7,889,753 B2Granted
Multiple access techniques for a wireless communication medium
AssigneeQUALCOMM Incorporated
InventorsAmal Ekbal, Chong U. Lee, David Jonathan Julian
Life of this patent
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Abstract
A multiple access technique for a wireless communication system establishes separate channels by defining different time intervals for different channels. In a transmitted reference system different delay periods may be defined between transmitted reference pulses and associated data pulses for different channels. In addition, a multiple access technique may employ a common reference pulse for multiple channels in a transmitted reference system. Another multiple access technique assigns different pulse repetition periods to different channels. One or more of these techniques may be employed in an ultra-wide band system.
Claims37
A multiple access method for an ultra-wide band system, comprising:
- controlling a first pulse repetition period associated with a first channel of the ultra-wide band system;
- and
- providing pulses separated in time by the first pulse repetition period;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second ultra-wide band channel of the ultra-wide band system;
- and
- adjusting the first pulse repetition period in accordance with a first pseudorandom sequence, wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
3 more elements
An apparatus for providing multiple access for an ultra-wide band system, comprising:
- at least one pulse repetition controller configured to control a first pulse repetition period associated with a first channel of the ultra-wide band system;
- and
- at least one signal generator configured to provide pulses separated in time by the first pulse repetition period;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second channel of the ultra-wide band system;
- and
- at least one pseudorandom sequence generator configured to generate a first pseudorandom sequence, wherein the at least one pulse repetition controller is further configured to adjust the first pulse repetition period in accordance with the first pseudorandom sequence, and wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
3 more elements
An apparatus for providing multiple access for an ultra-wide band system, comprising:
- means for controlling a first pulse repetition period associated with a first channel of the ultra-wide band system;
- and
- means for providing pulses separated in time by the first pulse repetition period;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second channel of the ultra-wide band system;
- and
- means for adjusting the first pulse repetition period in accordance with a first pseudorandom sequence, wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
3 more elements
A computer-program product for providing multiple access for an ultra-wide band system comprising:
- a non-transitory computer-readable medium comprising codes for causing a computer to:
- control a first pulse repetition period associated with a first channel of the ultra-wide band system;
- and
- provide pulses separated in time by the first pulse repetition period;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second channel of the ultra-wide band system;
- and
- adjust the first pulse repetition period in accordance with a first pseudorandom sequence, wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
4 more elements
A headset, comprising:
- a transducer configured to generate audio data;
- at least one pulse repetition controller configured to control a first pulse repetition period associated with a first channel of an ultra-wide band system;
- and
- at least one signal generator configured to provide pulses separated in time by the first pulse repetition period, wherein one or more of said pulses are modulated with the audio data;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second channel of the ultra-wide band system;
- and
- at least one pseudorandom sequence generator configured to generate a first pseudorandom sequence, wherein the at least one pulse repetition controller is further configured to adjust the first pulse repetition period in accordance with the first pseudorandom sequence, and wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
4 more elements
A watch, comprising:
- a user interface configured to generate data;
- at least one pulse repetition controller configured to control a first pulse repetition period associated with a first channel of an ultra-wide band system;
- and
- at least one signal generator configured to provide pulses separated in time by the first pulse repetition period, wherein one or more of said pulses are modulated with the data;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second channel of the ultra-wide band system;
- and
- at least one pseudorandom sequence generator configured to generate a first pseudorandom sequence, wherein the at least one pulse repetition controller is further configured to adjust the first pulse repetition period in accordance with the first pseudorandom sequence, and wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
4 more elements
A sensing device, comprising:
- a sensor configured to generate data;
- at least one pulse repetition controller configured to control a first pulse repetition period associated with a first channel of an ultra-wide band system;
- and
- at least one signal generator configured to provide pulses separated in time by the first pulse repetition period, wherein one or more of said pulses are modulated with the data;
- wherein the first pulse repetition period is different than a second pulse repetition period associated with a second channel of the ultra-wide band system;
- and
- at least one pseudorandom sequence generator configured to generate a first pseudorandom sequence, wherein the at least one pulse repetition controller is further configured to adjust the first pulse repetition period in accordance with the first pseudorandom sequence, and wherein the second pulse repetition period is adjusted in accordance with a second pseudorandom sequence that is different than the first pseudorandom sequence.
4 more elements
Dependencies are inferred from the claim text.