Transmission architecture of transmitter
First Claim
1. A transmission architecture of a transmitter, for reducing Peak to Average Power Ratio (PAPR) of the transmitted signals and increasing multi-cell diversity gain without requiring descramble operation in a corresponding receiver, the architecture comprising:
- a forestage module transmitting a frequency domain data symbol;
a pilot insertion, connected to the forestage module, receiving the frequency domain data symbol, and inserting a pilot signal in the frequency domain data symbol to produce a frequency domain pilot symbol, so as to only estimate the channel effect;
a scramble selector, connected to the pilot insertion, generating a plurality of scramble patterns for every frequency domain pilot symbol so as to perform a scramble operation with the frequency domain pilot symbol, and then performing a select operation from among the plurality of scrambled frequency domain pilot symbols to select a scrambled frequency domain pilot symbol with minimum PAPR to produce a requirement symbol, wherein the plurality of the scramble patterns generated by the scramble selector are irrelevant to each other, but a part of the scramble parameters in each of the scramble patterns are relevant to one another as long as there is a little randomness; and
a backstage module, connected to the scramble selector, for processing and transmitting the requirement symbol out of the transmitter so as to provide a corresponding receiver with the transmitted requirement symbol which can be recovered by the receiver without any corresponding descramble operation.
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Abstract
This invention provides a transmission architecture of transmitter which includes a forestage module, a pilot insertion, a scramble selector, and a backstage module. A frequency domain data symbol is transmitted by the forestage module. A pilot signal is inserted in the frequency domain data symbol by the pilot insertion, and a frequency domain pilot symbol is produced. The frequency domain pilot symbol performed a scramble operation and a select operation with certain scramble patterns by the scramble selector, and a requirement symbol is produced. The requirement symbol is converted into the transmitted signal by the backstage module. Because the use of the scramble operation and the select operation from the scramble selector, the transmission architecture of transmitter provided by this invention can both reduce the PAPR and increase the multi-cell diversity gain in an OFDM single frequency network system.
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Citations
18 Claims
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1. A transmission architecture of a transmitter, for reducing Peak to Average Power Ratio (PAPR) of the transmitted signals and increasing multi-cell diversity gain without requiring descramble operation in a corresponding receiver, the architecture comprising:
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a forestage module transmitting a frequency domain data symbol; a pilot insertion, connected to the forestage module, receiving the frequency domain data symbol, and inserting a pilot signal in the frequency domain data symbol to produce a frequency domain pilot symbol, so as to only estimate the channel effect; a scramble selector, connected to the pilot insertion, generating a plurality of scramble patterns for every frequency domain pilot symbol so as to perform a scramble operation with the frequency domain pilot symbol, and then performing a select operation from among the plurality of scrambled frequency domain pilot symbols to select a scrambled frequency domain pilot symbol with minimum PAPR to produce a requirement symbol, wherein the plurality of the scramble patterns generated by the scramble selector are irrelevant to each other, but a part of the scramble parameters in each of the scramble patterns are relevant to one another as long as there is a little randomness; and a backstage module, connected to the scramble selector, for processing and transmitting the requirement symbol out of the transmitter so as to provide a corresponding receiver with the transmitted requirement symbol which can be recovered by the receiver without any corresponding descramble operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification