TH70253A - Methods for Encrypted Modulation - Google Patents

Abstract

DC60 (30/01/45) A method for encoded modulation of digital data is presented where the multi-level encrypted modulation is performed in Here, bits are useful. It is divided into parallel streams for the encoded modulation, and each stream is fed to each encoder in order to execute the channel encoding. In each encoder The bit will be added to the useful bits. And as having a straight look Skip that useful bit. A channel is encoded at a variable encoding rate in order to obtain a certain number of pre-configured bits for each encoder so that the signal stream is received. All that parallel encoding is packed with a number Of the same bit A method for encrypted modulation of digital data is presented here where multi-level encrypted modulation is performed here. It is divided into parallel streams for the encoded modulation, and each stream is fed to each encoder in order to execute the channel encoding. In each encoder The bit will be added to the useful bits. And as having a straight look Skip that useful bit. A channel is encoded at a variable encoding rate in order to obtain a certain number of pre-configured bits for each encoder so that the signal stream is received. All of the parallel encodings will contain a number of Of the same bit

Claims (9)

1.Method for encrypted modulation of digital data. Bit useful digital data, encrypted modulation performed at a number of different levels, is characterized by that The useful bits from the encoded modulation are obtained It is divided into parallel currents that each signal is regulated. Under the channel encoding by encoders (4, 5), each useful bit is encrypted. A channel that has at least one value, a fixed encoding rate that the useful bit will be encoded with, that end bit is encoded, the tunnels are in each encoder (4, 5) at Rate One variable encoding In order to get the pre-configured number of bits. For each encoder (4, 5) so that the parallel encoded stream is filled with the same number of bits and that the channel encrypted data is assigned. To the point where the signal is empty in order to form a modulation symbol 2. Method according to Clause 1 that is specifically designated that Variable coding rate The conjugation of the last bit is obtained through variable penetration methods. 3. Method according to Clause 2, which is specifically designated that Possible penetration plans All are built to be known with the transmitter and receiver. 4. Method for Clause 2 that is specifically designated that Possible penetration plans All for the end bit will be calculated. Known calculation methods with transmitter and receiver. 5. Procedures according to Clause 3 or Clause 4, any one That has been characterized as A constant coding rate and transmission rate are transmitted to the receiver. 6. Method according to any of the aforementioned claims That has been characterized as The channel encoding that is introduced is harmonized encoding. 7. Method according to any of the aforementioned claims That has been characterized as The number of bits encoded is generated by a number of modulation symbols that It has been multiplied by the m level value of modulation and is divided by the number of levels. 8. Transmitter for operation by any of Clause 1 to 7 of Clause 1 to which the characteristic is The transmitter will have Multiplexer (3) for useful bit sharing Into a parallel stream with a number of encoders (4, 5) and a path (6) for delivery. Refers the encrypted data to a blank spot. Number of encoders (4, 5) that correspond to The number of levels in that modulation 9. Receiver for the operation by any of the Clause 3, 4, 5, 6 or 7 procedure. That has been characterized as The receiver provides a means for estimating the signal (12,13), for the modulation of the modulation symbol and for the channel encoding.