Performance of turbo coded multicarrier CDMA with iterative multiuser detection and decoding

Kafle, P.L.; Sesay, A.B.

doi:10.1109/ccece.2001.933667

Cited by 7 publications

(9 citation statements)

References 5 publications

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“…Nonlinear channel : The modelling of the nonlinear channel [5] in the present study is achieved by considering a memoryless envelope model of travelling wave'tube amplifier (TWTA) due to Saleh 161, the AM/AM and AMmM conversion charateritics are given as : (4) where Asat represents the amplifier input saturation voltage and p ( t ) is the envelope fluctuation of the input signal to the amplifier. The output fluctuations can be avoided by operating the HPA with a large back-off in its linear region.…”

Section: Methodsmentioning

confidence: 99%

“…After decoding all the users once, interference estimates for the desired user are computed as in [5] …”

Section: Methodsmentioning

confidence: 99%

“…Also, the total number of subcaniers is chosen to be a multiple, P of K, so that P symbols (a total of P x K chips) will be transmitted during one 0FI)M symbol. In this article we have made use of soft interfemece cancellation proposed for a convolutionally cod& MC-CDMA downlink system [5].However, the equalization.coefficients and LLR calculations are derived for the uplink transmission. Therefore the output after performing user specific equalization and despreading is given as…”

Section: System Descriptionmentioning

confidence: 99%

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Performance of turbo coded MC-CDMA with iterative multiuser detection and decoding in nonlinear fading channel

Ghosh

Gangopadhyay

9th Asia-Pacific Conference on Communications (IEEE Cat. No.03EX732)

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The performance achievable with Turbo codes for MC-CDMA in fading channel has been ,recently reported [3]. Further performance gain can be achieved by jointly using Turbo decoding and multiuser detection. Turbo deccding'in combination with detection strategy for Multi Acces? Interference (MAI) cancellation has been shown to be very effective for MC-CDMA system in Rayleigh multipath fading environment. This paper reports new sim-ulation results on 'the efficacy of joint decoding and detection for MC-CDMA in a nonlinear and fading channel

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Section: Methodsmentioning

confidence: 99%

“…After decoding all the users once, interference estimates for the desired user are computed as in [5] …”

Section: Methodsmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Performance of turbo coded MC-CDMA with iterative multiuser detection and decoding in nonlinear fading channel

Ghosh

Gangopadhyay

9th Asia-Pacific Conference on Communications (IEEE Cat. No.03EX732)

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“…The complexity of the optimal computation, based on maximum a posteriori (MAP) criteria [4] for the multiuser detection, is exponential in terms of the number of active users. Hence, for the same of implementation feasibility, we will consider a soft interference cancellation approach.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, for the same of implementation feasibility, we will consider a soft interference cancellation approach. In [4,5], the detected symbols in the first stage are provided by the single-user minimum mean square error detector (SU-MMSED). This receiver is known for its capability to mitigate MAI in the downlink channel.…”

Section: Introductionmentioning

confidence: 99%

Iterative Partial Soft Interference Cancellation with MMSE Multiuser Detection for Uplink Turbo-Coded MC-CDMA System

Kumpoopong

Kunaruttanapruk

Jitapunkul

3rd Annual Communication Networks and Services Research Conference (CNSR'05)

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In this paper, we improve the conventional iterative soft interference cancellation by introducing the partial cancellation technique and minimum mean square error (MMSE) multiuser detection technique in an uplink turbo-coded multicarrier code division multiple access (MC-CDMA) system. The performance of our proposed receiver is evaluated in Rayleigh multipath fading channel by using computer simulation. Simulation results demonstrate the advantages of the proposed technique over the conventional technique.

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An iterative multiuser receiver using groupwise MLSE and interference cancellation in a MC-CDMA system

Kafle

Sesay

IEEE CCECE2002. Canadian Conference on Electrical and Computer Engineering. Conference Proceedings (Cat. No.02CH37373)

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Performance of turbo coded multicarrier CDMA with iterative multiuser detection and decoding

Cited by 7 publications

References 5 publications

Performance of turbo coded MC-CDMA with iterative multiuser detection and decoding in nonlinear fading channel

Performance of turbo coded MC-CDMA with iterative multiuser detection and decoding in nonlinear fading channel

Iterative Partial Soft Interference Cancellation with MMSE Multiuser Detection for Uplink Turbo-Coded MC-CDMA System

An iterative multiuser receiver using groupwise MLSE and interference cancellation in a MC-CDMA system

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