Iterative multiuser detector-decoding for nonbinary LDPC coded multicarrier MFSK systems

Tsai, Her-Chang

doi:10.1007/s11235-018-0520-7

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…A coded, relay assisted FH‐CDMA system using a fast, flat Rayleigh fading channel with high (

\sim

20 dB) SNR was studied in [25], resulting in

η = 0.1563

bits/s/Hz, in which reduced access code lengths were used in combination with the channel code to perform interference cancellation. Values of

η ≃ 0.65

, close to the ones presented here, were reporter in [10] for high SNR (

\sim

25 dB) Gaussian channel, requiring multi‐carrier modulation and

U > 60

to achieve such a magnitude.…”

Section: Results and Analysissupporting

confidence: 83%

“…Soft interference cancellation with iterative detection and decoding was introduced in [9] using convolutional codes. A system with low density parity check Code (LDPC) was studied in [10].…”

Section: Introductionmentioning

confidence: 99%

“…The main objective is to find the most spectrally efficient MAM between the extremes of orthogonality, as in [3], and non‐usage as in [11]. This approach differs from works [7] to [10] because these employ an orthogonal MAM. Other works differ from the present because they deal with the slow frequency hopping CDMA [15, 16] and use criteria other than spectral efficiency to evaluate performance.…”

Section: Introductionmentioning

confidence: 99%

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Spectral efficiency of a non‐orthogonal FH‐CDMA system

Marques¹,

Sharma

2020

IET Communications

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Fast frequency hopping code division multiple access (FH‐CDMA) is a low complexity option for multiuser communication in fast, frequency selective fading channels such as in mobile mmWave communications. The original, orthogonal FH‐CDMA has low spectral efficiency and up to now lacks a non‐orthogonal version. In this work, a soft input soft output, non‐orthogonal multiuser detector is designed using factor graphs. Extrinsic Information Transfer (EXIT) chart analysis of this detector allows determination of which multiple access code length maximises system spectral efficiency. Results show that when the access code length is reduced to an ideal length, spectral efficiency is maximised. Another conclusion is that maximum spectral efficiency is similar in value to a system with no multiple access method.

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“…A coded, relay assisted FH‐CDMA system using a fast, flat Rayleigh fading channel with high (