METHODS AND APPARATUS FOR CONFIGURING A PILOT SYMBOL IN A WIRELESS COMMUNICATION SYSTEM
First Claim
1. A transmitter comprising:
- a pseudo-random noise sequence generator configured to generate a pseudo-random noise sequence that corresponds to predefined system information to be communicated to a receiver;
a modulator configured to construct an acquisition pilot symbol by modulating a time domain symbol sequence with the pseudo-random noise sequence, a spectrum mask unit configured to mask the acquisition pilot symbol to a prescribed frequency profile; and
an assembly unit configured to place the modulated acquisition pilot symbol in a frame for wireless transmission.
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Accused Products
Abstract
Methods and apparatus for constructing a pilot symbol for a communication frame transmitted in a wireless communication system, such as an OFDM system, are disclosed. In particular, the methods and apparatus generate at least one pseudo-random noise sequence having at least a predetermined length, where the at least one pseudo-random noise sequence represents a system configuration of a wireless system. A time domain symbol sequence is modulated with the at least one pseudo-random noise sequence to create a timing acquisition pilot symbol. The modulated acquisition pilot symbol is further masked to a prescribed frequency profile and placed in a frame for wireless transmission. Accordingly, different system configurations can be communicated from a transmitter to a receiver with the acquisition pilot symbol modulated with correspondingly different pseudo-random noise sequences, while affording low complexity required to process the acquisition pilot symbol and a minimum peak to average power ratio when using QPSK modulation.
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Citations
40 Claims
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1. A transmitter comprising:
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a pseudo-random noise sequence generator configured to generate a pseudo-random noise sequence that corresponds to predefined system information to be communicated to a receiver;
a modulator configured to construct an acquisition pilot symbol by modulating a time domain symbol sequence with the pseudo-random noise sequence, a spectrum mask unit configured to mask the acquisition pilot symbol to a prescribed frequency profile; and
an assembly unit configured to place the modulated acquisition pilot symbol in a frame for wireless transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16)
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9. A method for constructing an acquisition pilot symbol comprising:
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generating at least one pseudo-random noise sequence having at least a predetermined length, where the at least one pseudo-random noise sequence represents a system configuration of a wireless system;
modulating a time domain symbol sequence with the at least one pseudo-random noise sequence to create the acquisition pilot symbol;
masking the acquisition pilot symbol to a prescribed frequency profile; and
placing the modulated and masked acquisition pilot symbol in a frame for wireless transmission. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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17. A processor for use in a wireless communication device comprising:
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a pseudo-random noise sequence generator configured to generate a pseudo-random noise sequence that corresponds to predefined system information to be communicated to a receiver;
a modulator configured to construct an acquisition pilot symbol by modulating a time domain symbol sequence with the pseudo-random noise sequence, a spectrum mask unit configured to mask the acquisition pilot symbol to a prescribed frequency profile; and
an assembly unit configured to place the modulated acquisition pilot symbol in a frame for wireless transmission. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A processor for use in a wireless communication device comprising:
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means for generating at least one pseudo-random noise sequence having at least a predetermined length, where the at least one pseudo-random noise sequence represents a system configuration of a wireless system;
means for modulating a time domain symbol sequence with the at least one pseudo-random noise sequence to create the acquisition pilot symbol;
means for masking the acquisition pilot symbol to a prescribed frequency profile; and
means for placing the modulated and masked acquisition pilot symbol in a frame for wireless transmission. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A computer-readable medium encoded with a set of instructions, the instructions comprising:
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an instruction for generating at least one pseudo-random noise sequence having at least a predetermined length, where the at least one pseudo-random noise sequence represents a system configuration of a wireless system;
an instruction for modulating a time domain symbol sequence with the at least one pseudo-random noise sequence to create the acquisition pilot symbol;
an instruction for masking the acquisition pilot symbol to a prescribed frequency profile; and
an instruction for placing the modulated and masked acquisition pilot symbol in a frame for wireless transmission. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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Specification