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IMPLICIT SIGNALLING IN OFDM PREAMBLE WITH EMBEDDED SIGNATURE SEQUENCE, AND CYCLIC PREFIX AND POSTFIX AIDED SIGNATURE DETECTION
IMPLICIT SIGNALLING IN OFDM PREAMBLE WITH EMBEDDED SIGNATURE SEQUENCE, AND CYCLIC PREFIX AND POSTFIX AIDED SIGNATURE DETECTION
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机译:具有嵌入式签名序列,循环前缀和后缀辅助签名检测的OFDM PREAMBLE中的隐式信令
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摘要
A transmitter transmitting payload data using Orthogonal Frequency Division Multiplexed (OFDM) symbols, including: a frame builder configured to receive the payload data and to receive signalling data to use in detecting and recovering the payload data at a receiver, and to form the payload data with the signalling data into frames for transmission; a modulator configured to modulate a first OFDM symbol with the signalling data and to modulate one or more second OFDM symbols with the payload data; a signature sequence processor circuit providing a signature sequence; a combiner circuit combining the signature sequence with the first OFDM symbol; a prefixing circuit to prefixing a guard interval to the first OFDM symbol to form a preamble; and a transmission circuit transmitting the preamble and the one or more second OFDM symbols. The guard interval is formed from time domain samples of a part of the signature sequence.
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