Frequency offset differential pulse position modulation
First Claim
1. An article comprising:
- one or more instructions stored on a computer readable medium that if executed by a computer result in transmitting a first pulse position modulation signal in a first frequency channel;
transmitting a second pulse position modulation signal in a second frequency channel; and
encoding data at least in part into the first pulse position modulation signal and/or the second pulse position modulation signal.
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Accused Products
Abstract
The present invention provides such a need by utilizing a frequency offset differential pulse position modulation scheme to transmit data between computing devices within a wireless network system. The differential pulse position modulation component of the scheme enables the present invention to provide relative immunity to interference for the system. In particular, such immunity from interference is achieved by utilizing a blanking time between pulse positions, which is large enough to allow the interference between frequency offset—differential pulse position modulation pulses to subside. The frequency offset component of the scheme enables the system to utilize multiple frequency channels to enable the system to achieve higher data rates. In particular, by utilizing a time offset between the frequency channels, the blanking time can be reduced, thereby increasing the amount of data that can be transmitted with a set period of time.
23 Citations
18 Claims
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1. An article comprising:
- one or more instructions stored on a computer readable medium that if executed by a computer result in transmitting a first pulse position modulation signal in a first frequency channel;
transmitting a second pulse position modulation signal in a second frequency channel; and
encoding data at least in part into the first pulse position modulation signal and/or the second pulse position modulation signal. - View Dependent Claims (2, 3, 4)
- one or more instructions stored on a computer readable medium that if executed by a computer result in transmitting a first pulse position modulation signal in a first frequency channel;
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5. An apparatus comprising:
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means for identifying a first pulse transmission time in a first time window for a first bit sequence of a bit stream based on a first value of the first bit sequence; means for transmitting a first signal at the identified first pulse transmission time using a first frequency; means for identifying a second pulse transmission time in a second time window for a second bit sequence of the bit stream based on a second value of the second bit sequence; and means for transmitting a second signal at the identified second pulse transmission time using a second frequency, wherein the first frequency is different than the second frequency, and further wherein the first time window and the second time window overlap at least partially in time. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An article comprising:
- one or more instructions stored on a computer readable medium that if executed by a computer result in encoding a first portion of data;
transmitting the encoded first portion of data at least in part in a first pulse position modulation signal in a first frequency channel;
encoding a second portion of data at least in part while transmitting the first portion of data; and
transmitting the encoded second portion of data at least in part in a second pulse position modulation signal in a second frequency channel. - View Dependent Claims (16, 17, 18)
- one or more instructions stored on a computer readable medium that if executed by a computer result in encoding a first portion of data;
Specification