Prototype for 5G new air interface technology SCMA and performance evaluation

Lü, Lei; Chen, Yan; Guo, Wei; Yang, Huilian; Wu, Yiqun; Xing, Shuangshuang

doi:10.1109/cc.2015.7386169

Cited by 96 publications

(38 citation statements)

References 8 publications

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“…In a nutshell, the efficiency of SCMA has been verified both by simulations and real-time prototyping in [95]. Both the lab tests and the field tests demonstrated that SCMA is capable of supporting upto three times more users than the number of resource-slots, whilst still maintaining a link-integrity close to that of orthogonal transmissions.…”

Section: ) Sparse Code Multiple Access (Scma)mentioning

confidence: 94%

“…Then, the family of LDS aided multi-carrier OFDM systems (LDS-OFDM) [68]- [73] will be discussed, which retains all the benefits of OFDM-based multi-carrier transmissions in terms of its ISI avoidance, together with MUD-assisted LDS-CDMA operating at a lower complexity than that of the optimal maximum a posteriori probability (MAP) detector. Another important extension of LDS-CDMA is SCMA [74]- [95], which still enjoys the benefit of lowcomplexity reception, but has a better performance than LDS-CDMA. A suite of other improved schemes and special forms of CDMA, such as MUSA [96] and SAMA [97] will also be discussed in this subsection.…”

Section: B Code-domain Nomamentioning

confidence: 99%

“…Apart from NTT DOCOMO, Huawei Technologies have also developed a SCMA-based multi-user uplink prototype to verify the advantages of the SCMA technology in real communication systems [171]. The Huawei demo system consists of one base station using two antennas for diversity combined reception, and 12 single-antenna aided users for uplink access and data transmission.…”

Section: F Performance Evaluations and Transmission Experiments Of Nomamentioning

confidence: 99%

“…The basic idea of NOMA is to support non-orthogonal resource allocation among the users at the ultimate cost of increased receiver complexity, which is required for separating the non-orthogonal signals. Recently, several NOMA solutions have been actively investigated [5]- [9], [13], which can be basically divided into two main categories, namely power-domain NOMA [14]- [17], [20]- [63] and code-domain NOMA [64]- [97], including multiple access solutions relying on low-density spreading (LDS) [64]- [73], sparse code multiple access (SCMA) [74]- [95], multiuser shared access (MUSA) [96], successive interference cancellation amenable multiple access (SAMA) [97], etc. Some other closely-related multiple access schemes, such as spatial division multiple access (SDMA) [98]- [111], pattern division multiple access (PDMA) [112] [113] and bit division multiplexing (BDM) [114] have also been proposed.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Survey of Non-Orthogonal Multiple Access for 5G

Dai

Wang

Ding

et al. 2018

IEEE Commun. Surv. Tutorials

1,100

664

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Abstract-In the 5th generation (5G) of wireless communication systems, hitherto unprecedented requirements are expected to be satisfied. As one of the promising techniques of addressing these challenges, non-orthogonal multiple access (NOMA) has been actively investigated in recent years. In contrast to the family of conventional orthogonal multiple access (OMA) schemes, the key distinguishing feature of NOMA is to support a higher number of users than the number of orthogonal resource slots with the aid of non-orthogonal resource allocation. This may be realized by the sophisticated inter-user interference cancellation at the cost of an increased receiver complexity. In this article, we provide a comprehensive survey of the original birth, the most recent development, and the future research directions of NOMA. Specifically, the basic principle of NOMA will be introduced at first, with the comparison between NOMA and OMA especially from the perspective of information theory. Then, the prominent NOMA schemes are discussed by dividing them into two categories, namely, power-domain and code-domain NOMA. Their design principles and key features will be discussed in detail, and a systematic comparison of these NOMA schemes will be summarized in terms of their spectral efficiency, system performance, receiver complexity, etc. Finally, we will highlight a range of challenging open problems that should be solved for NOMA, along with corresponding opportunities and future research trends to address these challenges.

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Section: ) Sparse Code Multiple Access (Scma)mentioning

confidence: 94%

Section: B Code-domain Nomamentioning

confidence: 99%

Section: F Performance Evaluations and Transmission Experiments Of Nomamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Survey of Non-Orthogonal Multiple Access for 5G

Dai

Wang

Ding

et al. 2018

IEEE Commun. Surv. Tutorials

1,100

664

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show abstract

“…[238] " Low latency VANET [239] " DSP round-trip latency less than 2µs is achieved for channel aggregation and de-aggregation for 48 20 MHz LTE signals. [88] " 20 times latency reduction in comparison to existing works [98] " Minimum latency 3 ms [63] " Latency ≤ 1 or 2 ms [94] " [240] " Latency ≤ 17 ms [60] " HARQ RTT ≤ 1.5 ms [241] " RTT latency ≤ 1 ms proposed for the BSs to decrease the average latency of content delivery in 5G cellular networks. The proposed scheme is carefully designed in order to take into account the benefit of multicast and cooperation while in the existing caching schemes, the popular content simply is brought close to the users.…”

Section: Existing Caching Solutions For 5gmentioning

confidence: 99%

A Survey on Low Latency Towards 5G: RAN, Core Network and Caching Solutions

Parvez

Rahmati

Güvenç

et al. 2018

IEEE Commun. Surv. Tutorials

748

395

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The fifth generation (5G) wireless network technology is to be standardized by 2020, where main goals are to improve capacity, reliability, and energy efficiency, while reducing latency and massively increasing connection density. An integral part of 5G is the capability to transmit touch perception type real-time communication empowered by applicable robotics and haptics equipment at the network edge. In this regard, we need drastic changes in network architecture including core and radio access network (RAN) for achieving end-to-end latency on the order of 1 ms. In this paper, we present a detailed survey on the emerging technologies to achieve low latency communications considering three different solution domains: RAN, core network, and caching. We also present a general overview of 5G cellular networks composed of software defined network (SDN), network function virtualization (NFV), caching, and mobile edge computing (MEC) capable of meeting latency and other 5G requirements.

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