Interblock memory for turbo coding

Yeh, Chia-Jung; Ueng, Yeong-Luh; Lin, Mao‐Chao; Lu, Ming-Che

doi:10.1109/tcomm.2010.02.060534

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…If we use the term δ · [1 − λ 2 ( , )] as the distance measure for x( ) andx( ), by following an analysis procedure similar to that from (9) to (17), we have Criterion 2: When no a priori information for the labelling bits is available at the detector, search for the bit labelling rule such that (18) is minimized, where X k denotes the set of all the signal vectors nearest to x( ) that have labelling bits which differ at the k-th bit position compared to those of x( ).…”

Section: A Labelling Criteria For the Noncoherent Coded Schemementioning

confidence: 99%

“…It was demonstrated in [17] and [18] that with the aid of codeword interleaving and extrinsic information exchange between adjacent codewords, the decoding threshold of the coherent coded systems can be significantly improved. These ideas were applied to coded M -PSK schemes under the noncoherent AWGN channel in [10], in which a significant improvement in error performance was also observed.…”

Section: Noncoherent Coded Apm Scheme Using Codeword Interleavingmentioning

confidence: 99%

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Noncoherent Amplitude/Phase Modulated Transmission Schemes for Rayleigh Block Fading Channels

Chen

Ueng

2013

IEEE Trans. Commun.

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In this paper, we investigate noncoherent transmission schemes using amplitude/phase modulation. For uncoded transmission schemes, we derive the pairwise error probability (PEP) and its high-SNR approximation for signal vectors with unequal power values using a noncoherent maximum-likelihood detector under Rayleigh block fading channels. For coded transmission schemes, we consider differential amplitude/phase modulated signals and introduce a codeword-interleaving strategy to improve the error performance. The design criteria for the signal labelling and bit interleaving are also derived via the high-SNR approximation of the PEP. At the receiver, we devise an iterative channel amplitude estimator to enhance the detection reliability. With the help of a specially-designed iterative receiving algorithm, the designed noncoherent coded scheme can provide a significant improvement, either in the error-floor or the waterfall region.

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Section: A Labelling Criteria For the Noncoherent Coded Schemementioning

confidence: 99%

Section: Noncoherent Coded Apm Scheme Using Codeword Interleavingmentioning

confidence: 99%

Noncoherent Amplitude/Phase Modulated Transmission Schemes for Rayleigh Block Fading Channels

Chen

Ueng

2013

IEEE Trans. Commun.

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“…In addition, Turbo code is also widely used in data communications, digital TV and etc [3][4][5]. The good performance of Turbo code is mainly due to the following aspects: 1) the SISO iterative decoding ways; 2) Interlace is introduced which directly affects the distance spectrum and performance of Turbo codes [6]. 3) Member encoder uses the iterative system volume code device [7].…”

Section: Introductionmentioning

confidence: 99%

A Study on Turbo Code Performance Based on AWGN Channel

Zhu

Liu

2013

AMM

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Turbo codes have a wide range of applications in 3G mobile communications, deep-sea communications, satellite communications and other power constrained fields. In the paper, the Turbo Code Decoding Principle and several major decoding methods are introduced. Simulations of Turbo code performance under different parameters of AWGN channel are made and the effects of the different interleaving length, the number of iterations, and the decoding algorithm to Turbo code performance are also discussed in AWGN channel. Simulation results show that under the same signal-to-noise ratio, the more the number of iterations is, the longer the sequence of information is, and the more excellent decoding algorithm is, the better the performance of Turbo codes is.

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