MUD Enabled Media Access Control for High Capacity, Low-Latency Spread Spectrum Communications

Eisenberg, Y.; Conner, K.F.; Sherman, Matthew; Niedzwiecki, Joshua

doi:10.1109/milcom.2007.4455193

Cited by 16 publications

(6 citation statements)

References 5 publications

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“…DIMA's distributed MAC algorithms maximize the benefit of the MUD-enabled physical layer while obviating the need for centralized control (e.g., infrastructure) and eliminating any single point of failure. A detailed description of the DIMA MAC protocol is given in Eisenberg, et al [5].…”

Section: The Dima Media Access Control Protocolmentioning

confidence: 99%

Interference multiple access wireless network demonstration enabled by real-time multiuser detection

Learned

Hombs

Lande

et al. 2008

2008 IEEE Radio and Wireless Symposium

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In recent outdoor, over-the-air tests and simulations, DARPA demonstrated greater than 3X improvement in aggregate wireless network throughput and latency compared to the 802.11b Wireless Local Area Network. This achievement is based on allowing multiple users to simultaneously use the same channel (time, frequency, code, etc.) without requiring a centralized infrastructure for coordination and spectrum preplanning. DARPA has developed new multiuser detection (MUD) algorithms that make it possible to exploit multi-access interference to increase network capacity. A key program goal is to apply these algorithms to next-generation warfighter communications systems for substantial capacity, latency and scalability improvements.Index Terms -multi-access communication, wireless LAN, local area networks, metropolitan area networks.

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Section: The Dima Media Access Control Protocolmentioning

confidence: 99%

Interference multiple access wireless network demonstration enabled by real-time multiuser detection

Learned

Hombs

Lande

et al. 2008

2008 IEEE Radio and Wireless Symposium

Self Cite

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“…Such a system of CCI-tolerant nodes would rely upon the IMA-MAC to assign a subset of requesting transmitter nodes to the same channel [11], [12], [13] and/or control powers and rates among the participating interfering nodes.…”

Section: Introductionmentioning

confidence: 99%

Cognitive coexistence: A throughput study of MUD-enhanced opportunistic spectrum access

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Johnston²,

Kaminski

2013

2013 Asilomar Conference on Signals, Systems and Computers

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A new opportunistic spectrum access overlay/underlay paradigm for enabling heterogeneous wireless networks of primary and secondary, or multiple "secondary" users to coexist on the same frequency in the same geographic location is proposed and evaluated. In this new paradigm of cognitive coexistence, underlay nodes operate without overt coordination with overlay nodes or other underlay bases. Instead of overt coordination, the underlay nodes monitor their local environment and their effect upon it to determine acceptable channels for coexistence. Moreover, with the employment of multiuser detection in some or all of the underlay nodes (and in none of the overlay nodes), high rate underlay links are possible in the presence of even the most severe overlay interference. The result is a backward compatible coexistence of overlay and underlay nodes with high throughput for the underlay network while maintaining acceptable data rates for the overlay network. This paper describes what we define as the cognitive coexistence strategy (CCS) that enables nodes to determine among all occupied bands which band is most likely to result in a successful coexistence between its link and the already existing link on that band. The CCS takes advantage of the adaptive nature of the overlay nodes and the unpredictable, but often present asymmetric channel due to the different path losses between a transmitter and its intended and unintended receivers. This paper presents a preliminary simulation-based investigation of the opportunity that exists for a pair of cognitive coexistence radios (CCR) operating as a small cell base and mobile in an urban wireless cellular environment, showing sufficient opportunity for high throughput coexistence that can be advantaged by the cognitive capability of the CCR nodes.

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“…However, algorithms with reduced complexity are available, which achieve similar performance [6]. MUD has also been investigated by several authors in the context of ad hoc networks by combining it with appropriate MAC protocols, which enable MUD operation on the physical layer, e.g., [7], [8], [9].…”

Section: Introductionmentioning

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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MUD Enabled Media Access Control for High Capacity, Low-Latency Spread Spectrum Communications

Cited by 16 publications

References 5 publications

Interference multiple access wireless network demonstration enabled by real-time multiuser detection

Interference multiple access wireless network demonstration enabled by real-time multiuser detection

Cognitive coexistence: A throughput study of MUD-enhanced opportunistic spectrum access

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

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