J. P. Woodard and L. Hanzo, "Comparative Study of Turbo Decoding Techniques: An Overview," IEEE Trans. On VT, Vol. 49, No. 6, pp. 2208-2233, Nov. 2000. Home/Search Document Details and Download
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Log-Likelihood Ratio (LLR) Conversion Schemes in - Orthogonal Code Hopping (2003) (Correct)
....channels are assumed to experience either AWGN or independent (uncorrelated) Rayleigh fading. No specific code hopping patterns are designated and symbol perforations occur randomly. Turbo coding in 3GPP specifications is considered with the decoder using the soft output Viterbi algorithm (SOVA) [4]. A 1 BLER (Block Error Rate) 5] is assumed as a performance measure. The size of an encoder block is 1000 bits and the number of encoder blocks used in simulation is 10 000. The code rate is 1 4. Fig. 4 illustrates the required for a 1 BLER versus the perforation probability for the three LLR ....
J. P. Woodard and L. Hanzo, "Comparative study of turbo decoding techniques: An overview," IEEE Trans. Veh. Technol., vol. 49, pp. 2208--2233, Nov. 2000.
Adaptive Code Rate for Orthogonal Code Hopping - Multiplexing Ochm In (2003) (Correct)
....of symbols occur randomly. Recursive Systematic Convolutional (RSC) type Parallel Concatenated Convolutional Codes (PCCC) in 3GPP specifications are considered as an encoder as widely used in third generation wireless communcations. The decoder adopts the Soft Output Viterbi Algorithm (SOVA) [12]. The number of decoding iterations is adaptive and restricted within 10. Automatic Repeat Request (ARQ) 13] is commonly used to improve performance for delay insensitive data communication instead of increasing E b N 0 . Thus, 1 Block Error Rate (BLER) 14] is assumed as a performance measure, ....
J. P. Woodard and L. Hanzo, "Comparative Study of Turbo Decoding Techniques: An Overview," IEEE Trans. On VT, Vol. 49, No. 6, pp. 2208-2233, Nov. 2000.
Transport Block Error Rates For Utra-Fdd Downlink With.. - Olmos, Ruiz (Correct)
....a downlink DCH as defined by the 3GPP standard. The DSCH is simulated as a DCH with adjustable spreading factor and without multiplexing the DPCCH. The encoding of the turbo code follows reference [3] and the iterative turbo decoding is based on a MAP algorithm for the decoding of each constituent [4]. The soft information is obtained by quantization to 3 bits of the decision variable at the output of the RAKE. The metric (a priori probability) of the soft levels is calculated assuming perfect signal to noise estimation and Gaussian distributed decision variable. The rate matching has been ....
J.P.Woodard, L.Hanzo, "Comparative Study of Turbo Decoding Techniques: An Overview", IEEE Trans. on Vehicular Technology, vol. 49, no. 6, Nov. 2000, pp.2208-2233
Effect Of Outer Block Interleaving In Turbo Codes.. - Chaikalis.. (Correct)
.... past few years, turbo codes have attracted considerable attention because of the large coding gains they can achieve in an additive white Gaussian noise (AWGN) channel [1] For wireless communication systems, turbo codes have also been shown to provide impressive coding gains in fading channels [2], 3] 4] In correlated Rayleigh fading channels performance can be greatly improved if outer block interleaving is used [2] 3] 4] Outer block interleaving is required because turbo encoding may not be sufficient to cope with the errors induced in a correlated fading channel, which tend to ....
.... additive white Gaussian noise (AWGN) channel [1] For wireless communication systems, turbo codes have also been shown to provide impressive coding gains in fading channels [2] 3] 4] In correlated Rayleigh fading channels performance can be greatly improved if outer block interleaving is used [2], 3] 4] Outer block interleaving is required because turbo encoding may not be sufficient to cope with the errors induced in a correlated fading channel, which tend to produce burst errors. Turbo codes are more effective with random errors, so the outer block interleaver is needed to break up ....
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J. P. Woodard and L. Hanzo, "Comparative study of turbo decoding techniques: An overview", IEEE Trans. on Vehicular Technology, vol. 49, No. 6, pp. 2208-2233, November 2000
Adaptive Code Rate for Orthogonal Code Hopping - Multiplexing Ochm In (2002) (Correct)
No context found.
J. P. Woodard and L. Hanzo, "Comparative Study of Turbo Decoding Techniques: An Overview," IEEE Trans. On VT, Vol. 49, No. 6, pp. 2208-2233, Nov. 2000.
Performance Comparison of Orthogonal Code Hopping.. - Hdr Schemes In (2002) (Correct)
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J. P. Woodard and L. Hanzo, "Comparative Study of Turbo Decoding Techniques: An Overview," IEEE Trans. On VT, Vol. 49, No. 6, pp. 22082.
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