Opportunistic and Cooperative Spatial Multiplexing in MIMO Ad Hoc Networks

Chu, Shan; Wang, Xin

doi:10.1109/tnet.2010.2049027

Cited by 52 publications

(29 citation statements)

References 15 publications

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“…Chu et al propose a cross-layer scheduling algorithm to fully exploit the multiuser diversity and spatial diversity [9].…”

Section: Related Workmentioning

confidence: 99%

“…In multi-hop MIMO networks [5], some efforts have been made in recent years on developing MAC and routing protocols, e.g., [6], [7], [8], [9]. In such a setting, MIMO enhances the potential network throughput via spatial multiplexing by achieving high data rates or spatial reuse of the spectrum by allowing multiple simultaneous communications at the same vicinity.…”

Section: Introductionmentioning

confidence: 99%

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Link Scheduling for Exploiting Spatial Reuse in Multihop MIMO Networks

Guo

Yang

et al. 2013

IEEE Trans. Parallel Distrib. Syst.

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Abstract-MIMO has great potential for enhancing the throughput of multi-hop wireless networks via spatial multiplexing or spatial reuse. Spatial reuse with stream control (SC) provides a considerable improvement of the network throughput over spatial multiplexing. The gain of spatial reuse, however, is still not fully exploited. There exist large numbers of additional data streams, which could be transmitted concurrently with those data streams scheduled by stream control at certain time slots and vicinities. In this paper, we address the issue of MIMO link scheduling to maximize the gain of spatial reuse and thus network throughput. We propose a receiveroriented interference suppression model (ROIS), based on which we design both centralized and distributed link scheduling algorithms to fully exploit the gain of spatial reuse in multi-hop MIMO networks. Further, we address the traffic-aware link scheduling problem by injecting non-uniform traffic load into the network. Through theoretical analysis and comprehensive performance evaluation, we achieve the following results: (1) Link scheduling based on ROIS achieves significant higher network throughput than that based on stream control, with any interference range, number of antennas, and average hop length of data flows. (2) The traffic-aware scheduling is enticingly complementary to the link scheduling based on ROIS model. Accordingly, the two scheduling schemes can be combined to further enhance the network throughput.

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“…Chu et al propose a cross-layer scheduling algorithm to fully exploit the multiuser diversity and spatial diversity [9].…”

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Link Scheduling for Exploiting Spatial Reuse in Multihop MIMO Networks

Guo

Yang

et al. 2013

IEEE Trans. Parallel Distrib. Syst.

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“…OFDM technique offering better use of ad hoc network like intersymbol interference (ISI), OFDM avoids this problem by sending many low speed transmissions simultaneously and increase the network throughput. [1][2] [3] In OFDM, the sub carrier frequencies are chosen so that the sub carriers are orthogonal to each other. This greatly simplifies the design of both the transmitter and the receiver.…”

Section: A Ofdmmentioning

confidence: 99%

A Study On OFDM In Mobile Ad Hoc Network

Ahmed¹,

Abdullah²,

Mandala³

2012

IJACSA

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Abstract-Orthogonal Frequency Division Multiplexing (OFDM)is the physical layer in emerging wireless local area networks that are also being targeted for ad hoc networking. OFDM can be also exploited in ad hoc networks to improve the energy performance of mobile devices. It is important in wireless networks because it can be used adaptively in a dynamically changing channel. This study gives a detailed view about OFDM and how it is useful to increase the bandwidth. This paper also gives an idea about how OFDM can be a promising technology for high capacity wireless communication.

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“…The authors of [24] exactly address this issue and assume for their algorithm as a prerequisite that the neighbor density is limited such that channel estimation and decoding is possible. They assume that each node has one individual code out of a code list that is common and known to all nodes in the network.…”

Section: Second Minislotmentioning

confidence: 99%

Quality of service implications of power control and multiuser detection-based cross-layer design

Korger

Hartmann

Kusume

et al. 2011

J Wireless Com Network

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In order to allow for dense spatial reuse in wireless ad hoc networks, multiple access interference must be dealt with. This calls for advanced physical layer techniques, such as multiuser detection (MUD) or power control. However, these techniques can only be efficiently applied to ad hoc networks when they are part of a joint physical layer (PHY) and Medium Access Control (MAC) cross-layer design (CLD). In order to better understand both, the potential but also the limits of handling interference by means of MUD and power control, respectively, in this article we provide a comprehensive comparison between MUD-based and power control-based CLDs. We study the behavior of both approaches in terms of throughput, delay, as well as fairness in scenarios with high and low user densities, respectively. To provide more detailed insight in the interaction between MAC and PHY, we separate for each approach the throughput results into gains achieved solely by the MAC layer and by the PHY layer, respectively. These results highlight, among other aspects, some fundamental disadvantage of power control in distributed environments. We conclude that multiuser-based approaches are significantly more beneficial in ad hoc scenarios than power control-based schemes.

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Opportunistic and Cooperative Spatial Multiplexing in MIMO Ad Hoc Networks

Cited by 52 publications

References 15 publications

Link Scheduling for Exploiting Spatial Reuse in Multihop MIMO Networks

Link Scheduling for Exploiting Spatial Reuse in Multihop MIMO Networks

A Study On OFDM In Mobile Ad Hoc Network

Quality of service implications of power control and multiuser detection-based cross-layer design

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