Parallel concatenated turbo codes for continuous phase modulation

Shane, Morton; Wesel, Richard D.

doi:10.1109/wcnc.2000.904617

Cited by 19 publications

(20 citation statements)

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“…In [12] an approach that incorporates an outer convolutional encoder into the CPE, and tries to optimize the overall trellis encoder based on Euclidean distances maximization has been proposed. In this paper, still adopting the Rimoldi decomposition, we modify the CPE through linear feedback and optimize it in order to maximize the pragmatic capacity, a concept to be explained later in connection with the CPM.…”

Section: Introductionmentioning

confidence: 99%

A Pragmatic Approach to Coded Continuous-Phase Modulation

Benedetto

Montorsi

Perotti

et al. 2007

2007 Information Theory and Applications Workshop

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Section: Introductionmentioning

confidence: 99%

A Pragmatic Approach to Coded Continuous-Phase Modulation

Benedetto

Montorsi

Perotti

et al. 2007

2007 Information Theory and Applications Workshop

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“…CPE is a convolutional encoder producing codeword sequences that are mapped onto waveforms by MM, creating a continuous phase signal. CPE also provides power efficiency beside phase [11,12]. Here, we combine low density parity check codes and continuous phase modulation and thus, we introduce low density parity check coded-continuous phase frequency shift keying (LDPCC-CPFSK).…”

Section: Introductionmentioning

confidence: 99%

Performance of low density parity check coded continuous phase frequency shift keying (LDPCC‐CPFSK) over fading channels

Hekim

Odabasioglu

Uçan

2006

Int J Communication

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SUMMARYIn this paper, in order to improve bit error performance, bandwidth efficiency and reduction of complexity compared to related schemes such as turbo codes, we combine low density parity check (LDPC) codes and continuous phase frequency shift keying (CPFSK) modulation and introduce a new scheme, called 'low density parity check coded-continuous phase frequency shift keying (LDPCC-CPFSK)'. Since LDPC codes have very large Euclidean distance and use iterative decoding algorithms, they have high error correcting capacity and have very close performances to Shannon limit. In all communication systems, phase discontinuities of modulated signals result extra bandwidth requirements. Continuous phase modulation (CPM) is a powerful solution for this problem. Beside CPM provides good bandwidth efficiency; it also improves bit error performance with its memory unit. In our proposed scheme, LDPC and CPFSK, which is a special type of CPM, are considered together to improve both error performance and bandwidth efficiencies. We also obtain error performance curves of LDPCC-CPFSK via computer simulations for both regular and irregular LDPC code. Simulation results are drawn for 4-ary CPFSK, 8-ary CPFSK and 16-ary CPFSK over AWGN, Rician and Rayleigh fading channels for maximum 100 iterations, while the frame size is chosen as 504.

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“…This has the advantage of binary coding throughout, together with increased power in the outer code. Turbo coded CPM using soft iterative decoding has been described in [10], [12]. However, multiple CPM channels are required in [10] to implement the turbo coded CPM.…”

Section: Introductionmentioning

confidence: 99%

“…Turbo coded CPM using soft iterative decoding has been described in [10], [12]. However, multiple CPM channels are required in [10] to implement the turbo coded CPM. More specifically, [10] concatenates two CPM channels with a turbo code and shows that some small improvement can be achieved.…”

Section: Introductionmentioning

confidence: 99%

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Turbo-coded multi-alphabet binary CPM for concatenated continuous phase modulation

Ning

Wade

2005

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

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Constant envelope and high spectral efficiency are among the key properties which make continuous phase modulation (CPM) a preferred choice for many applications. Numerous methods are available for designing concatenated CPM systems to achieve additional coding gains. In this paper, we propose a new serial concatenated CPM scheme. Our design uses a multialphabet binary CPM as an inner code, a modified turbo code as an outer code, and specially designed interleavers. The extrinsic information transfer (EXIT) chart technique has been employed to assist the outer code design. Using soft decision decoding, we show that our design gives noticeable improvements compared with previous concatenated CPM schemes over additive white Gaussian noise (AWGN) channel.

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Parallel concatenated turbo codes for continuous phase modulation

Cited by 19 publications

References 19 publications

A Pragmatic Approach to Coded Continuous-Phase Modulation

A Pragmatic Approach to Coded Continuous-Phase Modulation

Performance of low density parity check coded continuous phase frequency shift keying (LDPCC‐CPFSK) over fading channels

Turbo-coded multi-alphabet binary CPM for concatenated continuous phase modulation

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