On quasi-cyclic interleavers for parallel turbo codes
نویسندگان
چکیده
منابع مشابه
Interleavers for Punctured Turbo Codes
Puncturing is a way of increasing the code rate by deleting one or more parity bits in a code word without an increase in complexity. Puncturing is applied to the Turbo code scheme of Berrou et al. to increase the coding rate from 1/3 to 1/2 or higher rates. Normally, puncturing causes uneven protection due to the process of random interleav-ing. This problem can be solved with a mod-k in-terle...
متن کاملInterleavers for Unpunctured Symmetric Turbo Codes
Interleavers for Unpunctured Symmetric Turbo Codes Johann A. Bri a Dept. Comms. & Computer Eng. University of Malta Msida MSD 06, Malta E-mail: [email protected] Victor Buttigieg Dept. Comms. & Computer Eng. University of Malta Msida MSD 06, Malta E-mail: [email protected] Abstract | The Turbo code interleaver design problem is considered for relatively large block sizes, where the e ect ...
متن کاملNon-Binary Turbo Codes Interleavers
In this paper the particularities of the interleavers used in the case of the Recursive Systematic Convolutional Code (RSC), n/(n+2) rate, with n=2, unpunctured non-binary turbo codes (NBTC) were described. The interleavers: block, pseudo-random and new interleaving methods are presented. These new interleaving methods were elaborated starting from the particular form of the date accepted by no...
متن کاملSelf-Inverse Interleavers for Turbo Codes
In this work we introduce and study a set of new interleavers based on permutation polynomials and functions with known inverses over a finite field Fq for using in turbo code structures. We use Monomial, Dickson, Möbius and Rédei functions in order to get new interleavers. In addition we employ Skolem sequences in order to find new interleavers with known cycle structure. As a byproduct we giv...
متن کاملOn Design of Interleavers with Practical Size for Turbo Codes
In this paper, we propose a new method to design an interleaver with practical size for turbo codes. In order to construct an optimal interleaver, we first set up the following design rules: (i) to suppress the interleaver correlation; (ii) to break up self-terminating weight-2 input sequences; and (iii) to avoid edge effects. We then synthesize a new type of interleaver structure, starting wit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2006
ISSN: 0018-9448
DOI: 10.1109/tit.2006.871061