CR

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CR

The two-character ISO 3166 country code for COSTA RICA.

CR

1. ISO 3166-1 alpha-2 code for the Republic of Costa Rica. This is the code used in international transactions to and from Costa Rican bank accounts.

2. ISO 3166-2 geocode for Costa Rica. This is used as an international standard for shipping to Costa Rica. Each Costa Rican province has its own code with the prefix "CR." For example, the code for the Province of Limon is ISO 3166-2:CR-L.
References in periodicals archive ?
Alouini, "Receive antenna selection for underlay cognitive radio with instantaneous interference constraint," IEEE Signal Processing Letters, vol.
Haykin, "Cognitive radio: Brain-empowered wireless communications," IEEE Journal on Selected Areas in Communications, vol.
Zhang, "Full-duplex spectrum-sensing and mac-protocol for multichannel nontime-slotted cognitive radio networks," IEEE Journal on Selected Areas in Communications, vol.
Figure 1 shows an example of source and destination SU pair in the multihop and multichannel cognitive radio network with the assistance of multiple relays in the presence of attacks by multiple jammers.
Renfors, "Detection of hidden users in cognitive radio networks," in 2013 IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), pp.
A paper entitled 'Competing Cognitive Tactical Networks' which was published in issue 20 of the Lincoln Laboratory Journal in 2014 written by Siamak Dastangoo, Carl Fossa and Young june Gwon stated that: "The capability of radios to dynamically search for, learn and access available spectrum resources can greatly improve performance in a congested environment." Rohde and Schwarz' statement continued that: "By acquiring awareness about the current radio environment and the other spectrum users, cognitive radios can more efficiently exploit idle spectrum and manage interference."
(14) to determine the estimated number of channels to be finely sensed by the cognitive radio, where the most conservative modulation scheme (i.e., BPSK) is assumed in the transmission.
In a number of earlier publications cognitive radio was envisioned as self-reconfiguring SDR.
Before carrying out the detection process, the cognitive radio (CR) will apply first the K-means grouping algorithm in order to discover the PU transmission patterns.
The scenario considered is as follows: a cognitive radio network is considered which has one PU, some SUs, and MSUs.
Youssef, "Primary user aware k-hop routing for cognitive radio networks," IEEE Global Communications Conference (GLOBECOM' 15), San Diego, CA, USA, pp.
This project clearly fits the topic, not only because its main goal is to evolve an innovative technology up to TRL4/5, but also because cognitive radio is a key enabling technology for the areas identified by the topic.
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