Convergence properties of iterative soft onion peeling

Chayat, N.; Shamai, Shlomo

doi:10.1109/itcom.1999.781391

Cited by 16 publications

(5 citation statements)

References 14 publications

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“…Therefore, in (14) is a function of the input SNR . We express this function as (16) We also define the bit-error rate (BER) performance for the as a function of as (17) Both and can be obtained by the Monte Carlo method similar to [4], [13], [14], and [18]. Fig.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…2 shows two examples of and . One is for a length- 16 repetition code, and the other is for a concatenation of a rate-1/2 convolutional code with generator polynomials followed by a length-8 repetition code. In general, both and are decreasing functions of over with , , , and .…”

Section: Performance Evaluationmentioning

confidence: 99%

“…The intuition is that the strong power users can converge first and benefit the weak power users. For ideal codes or "good" codes, perfect or near perfect cancellation can be made with a successive stripping technique [16], [17]. However, for "poor" codes, the stripping technique may result in an excessive amount of energy use.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…This principle has been further studied in [16]- [18]. In this paper, we will show that CDMA with chip-level interleavers provides a very simple and efficient framework to realize the principle.…”

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confidence: 90%

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Analysis and optimization of CDMA systems with chip-level interleavers

Liu

Tong

Ping

2006

IEEE J. Select. Areas Commun.

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Abstract-In this paper, we present an unequal power allocation technique to increase the throughput of code-division multiple-access (CDMA) systems with chip-level interleavers. Performance is optimized, respectively, based on received and transmitted power allocation. Linear programming and power matching techniques are developed to provide solutions to systems with a very large number of users. Various numerical results are provided to demonstrate the efficiency of the proposed techniques and to examine the impact of system parameters, such as iteration number and interleaver length. We also show that with some very simple forward error correction codes, such as repetition codes or convolutional codes, the proposed scheme can achieve throughput reasonably close to that predicted by theoretical limit in multiple access channels.

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Section: Performance Evaluationmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

mentioning

confidence: 90%

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Analysis and optimization of CDMA systems with chip-level interleavers

Liu

Tong

Ping

2006

IEEE J. Select. Areas Commun.

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“…Different approaches have been investigated. For ideal (or nearly ideal) forward error control (FEC) codes, successive stripping [6] [9] (or "onion peeling" [7]) can be used. For more practical codes, power allocation for iterative multiuser detection has been discussed [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of IDMA systems based on SNR evolution and power allocation

Ping

Liu

IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004

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Abstract-We show that the performance of an interleavedivision multiple-access (IDMA) system can be assessed by tracking the signal-to-noise-ratio (SNR) evolution of the iterative chip-by-chip (CBC) detection process. Based on this we develop a power allocation technique for performance optimization. Very high throughput (say 8 bits/chip) is observed for IDMA without sophisticated channel coding. 1 Index Terms-CDMA, iterative detection, linear programming, multiuser detection, power allocation.

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Convergence properties of iterative soft onion peeling

Cited by 16 publications

References 14 publications

Analysis and optimization of CDMA systems with chip-level interleavers

Analysis and optimization of CDMA systems with chip-level interleavers

Analysis and design of IDMA systems based on SNR evolution and power allocation

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