error-correcting code การใช้

• Since being proposed , it has become the research hotpot in the error - correct coding area
• Error - correcting codes work by adding extra information to original data
• In this paper , we study two kinds of error - correcting codes . one kind is cyclic code over finite chain rings , and the other is sdq ( b ) code over finite fields
• In this scheme , rs code is selected as the main error - correcting code . its encoding / decoding algorithms and hardware implements are researched
• The technology of error correction is an important part of information theory . both theory and practice should be known by the people who research on error - correcting codes
• It also discusses the code and decode theory for rs error - correcting codes , then summarizing the design and debug experience for the rs ( 31 , 15 ) coder and decoder through fpga
• Low density parity check codes are a class of linear block error - correcting codes that can be defined by the very sparse parity - check matrix . their error performance approach shannon limits
• In these years , many new technologies are developed and applied to joint coded modulation systems , such as new error - correcting codes , space - time modulation on mimo channels and iterative decoding algorithm
• Recently , much interest of the coding community has focused around a new family of error - correcting codes , called turbo codes , whose perfor - mances in terms of bit error rate ( ber ) are close to the shannon limit
• This problem arises from the circuit layout of vlsi designs , interconnection networks , sparse matrix computations , error - correcting code designs , data structures , biology , etc , which has extensive backgrounds
• In the second part , we discuss the problem encountered while transferring dsss signal in fh system , and finally a " fh + long error - correcting code " communication solution based on bpsk modulation is presented
• Therefore , software radio has greatly mobility and opening . being of these characterics , it has become one of the focuses of communication research at present . in this paper , error - correcting codes of software radio is discussed
• Based on the interlace and concatenation , a new class of error - correcting codes over two - dimension , rs - complex rotary codes , is proposed . rs codes with a great error - correcting ability is the main structure of the new codes
• Then we use lifting scheme improve wavelet analysis methods and proposed a kind of digital watermark algorithm based on error - correcting coded which is a method of communication theory and is to correct watermark signal
• So , besides a brief introduction of reed - solomon error - correcting code ( rs code ) , this paper also gives a thorough analysis of rs code ' s application in two - dimensional bar code pdf417 , giving detailed error - correcting principles in gf ( 929 )
• Qr code is a kind of 2d matrix barcode . it has high density , great capacity that will influent coding of 2d - barcode . a rs code is cyclic symbol error - correcting code , which can correct lost or missing data for damaged symbols
• Orthogonal arrays are related to combinatorics , finite fields , geometry and error - correcting codes , etc . the definition of an orthogonal array is simple and natural , and we know many elegant constructions - yet there are at least as many unsolved problems
• Chapter 5 gives the design illumination of the rs coder and decoder based on fpga . then it gives the integrated results for realization design of the rs ( 31 , 15 ) error - correcting code . after that , it gives the functional and layout simulation results for the limited field multiplier , divider , rs coder and rs de - coder
• Low density parity check ( ldpc ) codes are good error - correcting codes , which can approach shannon ' s capacity limit . due to the sparsity of its check matrix , ldpc codes can be decoded only with linear time complexity using iterative decoding algorithm . therefore , ldpc codes have become one of the most attractive fields in the channel coding community
• In order to keep the signal transmission unfailing , bch error - correcting code is applied in the system . this kind of system does n ' t affect the application television broadcasting normally and does n ' t increase video signal bandwidth additionally . it optimizes the transmission circuit for control signals and solves the problem of time - delaying , thereby it promotes the transmission more efficiently and economically