2016/12/09 by Ahmed Ewaisha, Ewaisha, Ahmed, Cihan Tepedelenlioğlu +2
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Cognitive Radio Networks and Spectrum Sensing #FOS: Computer and information sciences #Information Theory (cs.IT) #Wireless Communication Networks Research
paper · pdf · doi:10.48550/arxiv.1612.03227
openalex publication_date 2016/12/09 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
We study an uplink multi secondary user (SU) cognitive radio system suffering\nstatistical heterogeneity among SUs' channels. This heterogeneity may result in\ndifferentiated delay performances to these SUs and result in harmful\ninterference to the PU. We first derive an explicit closed-form expression for\nthe average delay in terms of an arbitrary power-control policy. Then, we\npropose a delay-optimal closed-form scheduling and power-control policy that\ncan provide the required average delay guarantees to all SUs besides protecting\nthe PU from harmful interference. We support our findings by extensive system\nsimulations and show that it outperforms existing policies substantially.\n