User-specific chip-level interleaver design for IDMA systems

Wu, Hsiao-Chun; Li, Ping; Perotti, Alberto

doi:10.1049/el:20063770

Cited by 92 publications

(46 citation statements)

References 4 publications

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“…Therefore, the design of reasonable interleavers is rather essential. A user-specific interleaver design method is proposed in [51], which can resolve the memory cost problem and reduce the signaling exchanging between the gNB and the users. Besides, to accommodate IDMA in multicarrier transmission, e.g., in OFDM, a multicarrier interleave-divisionmultiplexing-aided IDMA (MC-IDM-IDMA) is presented in [52].…”

Section: Idmamentioning

confidence: 99%

Uplink Nonorthogonal Multiple Access Technologies Toward 5G: A Survey

Han

Zhao

et al. 2018

Wireless Communications and Mobile Computing

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Owing to the superior performance in spectral efficiency, connectivity, and flexibility, nonorthogonal multiple access (NOMA) is recognized as the promising access protocol and is now undergoing the standardization process in 5G. Specifically, dozens of NOMA schemes have been proposed and discussed as the candidate multiple access technologies for the future radio access networks. This paper aims to make a comprehensive overview about the promising NOMA schemes. First of all, we analyze the state-of-the-art NOMA schemes by comparing the operations applied at the transmitter. Typical multiuser detection algorithms corresponding to these NOMA schemes are then introduced. Next, we focus on grant-free NOMA, which incorporates the NOMA techniques with uplink uncoordinated access and is expected to address the massive connectivity requirement of 5G. We present the motivation of applying grant-free NOMA, as well as the typical grant-free NOMA schemes and the detection techniques. In addition, this paper discusses the implementation issues of NOMA for practical deployment. Finally, we envision the future research challenges deduced from the recently proposed NOMA technologies.

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Section: Idmamentioning

confidence: 99%

Uplink Nonorthogonal Multiple Access Technologies Toward 5G: A Survey

Han

Zhao

et al. 2018

Wireless Communications and Mobile Computing

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“…To solve this problem, the idea of reference [5] is developed. In [5], the conventional interleavers (π 1 , . .…”

Section: Variable Interleaver Designmentioning

confidence: 99%

Variable Interleaver Allocation for Downlink OFDM-IDMA

Xiao

et al. 2011

Wireless Pers Commun

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In this letter, a variable interleaver allocation scheme is proposed to alleviate the high peak-to-average power ratio (PAPR) of downlink OFDM-IDMA (orthogonal frequency division multiplexing-interleave division multiple access). The basic idea is to allocate multiple interleaving patterns for each user, so as to decide the best pattern with the lowest peak value. Furthermore, a variable interleaver design scheme is combined to generate multiple patterns from an original one. It is shown that the proposed scheme can achieve the theoretical bound of PAPR reduction performance, while making a good tradeoff among PAPR reduction, system performance and computational complexity.

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“…Chip-by-chip interleaving is more efficient than symbolby-symbol interleaving from a performance point of view, particularly for short packet lengths and in conjunction with iterative processing. Interleaver proposals for IDMA are published in References [14,15]. After interleaving, modulation and pulse shaping is performed.…”

Section: Introduction To Interleave-division Multiple Access (Idma)mentioning

confidence: 99%

Multi‐layer interleave‐division multiple access: theory and practice

Hoeher

Schoeneich

Fricke

2008

Trans Emerging Tel Tech

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SUMMARYDirect-sequence code-division multiple access (DS-CDMA) is often put on the same level with CDMA, ignoring the fact that many different CDMA techniques exist. A special CDMA technique which has recently become popular is interleave-division multiple access (IDMA). In this semi-tutorial, focus is on a generalisation of IDMA referred to as interleave-division multiplexing (IDM)/IDMA or multi-layer IDMA for short. Multi-layer IDMA is a special form of superposition coding, and can be interpreted as a joint modulation, channel coding and multiple access scheme. Motivated by information theoretical arguments and practical functionalities, a wide range of subjects (such as capacity bounds, power allocation, receiver analysis, quality of service aspects, multi-layer ARQ and possible applications) are covered. This semi-tutorial consists of three parts: in the first part, an introduction to IDMA (Section 1) and multi-layer IDMA (Section 2) is given. In the second part, practical issues such as functionalities of multi-layer IDMA (Section 3) and multi-layer ARQ (Section 4) are studied. In the third part, information theoretical bounds in conjunction with power allocation (Section 5) and a receiver analysis (Section 6) are provided, before conclusions are drawn in Section 7.

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User-specific chip-level interleaver design for IDMA systems

Cited by 92 publications

References 4 publications

Uplink Nonorthogonal Multiple Access Technologies Toward 5G: A Survey

Uplink Nonorthogonal Multiple Access Technologies Toward 5G: A Survey

Variable Interleaver Allocation for Downlink OFDM-IDMA

Multi‐layer interleave‐division multiple access: theory and practice

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