ENCODING METHOD AND DEVICES TO OBTAIN CONSTANT AMPLITUDE TRANSMISSION SYMBOLS IN DIGITAL TRANSMISSION SCHEME BASED ON MULTI-CODE TRANSMISSION ARCHITECTURE USING BLOCK ORTHOGONAL EXTENDED TRANSORTHOGONAL CODES

摘要

The present invention relates to a block orthogonal extension pan-orthogonal (transorthogonal) encoding the waveform information data for obtaining the constant amplitude screen of transmitted symbols in a digital transmission method of the multi-code transmission structure used in encoding the column encoding method and apparatus, the transport device corresponding to each bit of the information data input column and a plurality of waveform encoder for selecting one code from each of the sub-set of the block perpendicular extension pan-orthogonal code, encoding the information data to be input to a plurality of waveform coder in the redundancy bits and information data encoder for generating heat, and the redundant bits the waveform encoder to correspond the information parity bits output from the data encoder column for selecting one code from another sub-set of the block perpendicular extension pan-orthogonal code, wherein said plurality of waveform by summing the codes output from the encoder and the waveform encoder comprises an excess bit summing to generate the output symbol. Then, the parity bits are encoded so as to have a waveform coder the output symbols output from the summator constant amplitude characteristic. According to the invention, which can significantly improve bandwidth efficiency compared to the system using a single orthogonal code encoder, the amplitude of the output symbols is constant has the advantage of less affected by the non-linearity of the amplifier. ; Waveform coding, orthogonal codes, Walsh codes, Hadamard matrix, constant amplitude coding, transorthogonal code block orthogonal extension cord transorthogonal