Patent ID: 8238507
Filing Date: 2012-08-07
Classification: H04L

Abstract:
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.