# Direct Link-Aware Optimal Relay Selection and a Low Feedback Variant for Underlay CR

> Research article (IEEE Transactions on Communications, 2015) · cited 20× · AI/ML

**Wikidata**: [openalex:W1646959249](https://www.wikidata.org/wiki/openalex:W1646959249)  
**Source**: https://4ort.xyz/entity/direct-link-aware-optimal-relay-selection-and-a-low-feedback-variant-for-underlay-cr