2010
DOI: 10.1109/tvt.2010.2053056
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Capacity of Hybrid Cognitive Radio Networks With Distributed VAAs

Abstract: Abstract-A cooperative hybrid cognitive radio (CR) network is proposed to simultaneously operate on a dedicated licensed band and a secondary band. The licensed band is used for communications between a base station (BS) and mobile CR users, whereas the secondary band is used to facilitate the licensed band communication by coordinating multiple CR users to form distributed virtual antenna arrays (VAAs). The capacity of the proposed CR network is studied at both the link and system levels. At the link level (s… Show more

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Cited by 37 publications
(29 citation statements)
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“…There are two different types of relays, namely, fixed and mobile relays [2]. Fixed relays are deployed at locations according to cell planning and radio optimization to improve the user throughput or to expand the coverage at the cell edge [3], [4]. Mobile relays [5] are moving wireless nodes which fully support relaying functionalities in cellular systems.…”
Section: Introductionmentioning
confidence: 99%
“…There are two different types of relays, namely, fixed and mobile relays [2]. Fixed relays are deployed at locations according to cell planning and radio optimization to improve the user throughput or to expand the coverage at the cell edge [3], [4]. Mobile relays [5] are moving wireless nodes which fully support relaying functionalities in cellular systems.…”
Section: Introductionmentioning
confidence: 99%
“…On one hand, from the MIMO perspective, V-MIMO systems can be designed to achieve diversity gains [13], [16], [18]- [21], multiplexing gains [14], [15], and/or beamforming gains [22], [23] using various distributed coding and signal processing techniques. Moreover, the MIMO signaling can be designed to treat cooperative relays in a VAA in a non-selective [1], [2], [8], [13], [20] or selective [9], [10], [14] fashion. On the other hand, from the relay perspective, V-MIMO systems can adopt either amplify-and-forward (AF) [8], [9], [22]- [24], decode-and-forward (DF) [2], [3], [18], [25], compress-andforward (CF) [26], [27], or hybrid [11] schemes to complete a transmission in two-hops [1], [8], [9] or multi-hops [2], [3], [14], [18], [20], [25], [28].…”
mentioning
confidence: 99%
“…On the other hand, from the relay perspective, V-MIMO systems can adopt either amplify-and-forward (AF) [8], [9], [22]- [24], decode-and-forward (DF) [2], [3], [18], [25], compress-andforward (CF) [26], [27], or hybrid [11] schemes to complete a transmission in two-hops [1], [8], [9] or multi-hops [2], [3], [14], [18], [20], [25], [28]. Furthermore, the source can transmit information to the relays in a broadcast [16], [18] or multicast fashion [2], [3], [8], [9].…”
mentioning
confidence: 99%
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