Yazar "Jaradat, Ahmad Mohammad" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Öğe
    Dynamic-structure resource block allocation based scheduling for 5G systems
    (Institute of Electrical and Electronics Engineers Inc., 2022) Jaradat, Ahmad Mohammad; Sağlam, Mehmet İzzet; Kartal, Mesut; Arslan, Hüseyin
    We propose an efficient radio resource scheduling (RRS) approach based on the existing dynamic resource block structure (D-RBS). The proposed RRS is more responsive to variations in traffic demand. More specifically, small-sized resource blocks (RB)s are allocated to user equipments (UE)s to handle the changes in the traffic needs and link failures. The proposed approach enables low latency communication without the use of punctured mini-slot based scheduling methods. Thus, the performance of enhanced mobile broadband (eMBB) UEs or cells is not degraded while prioritizing ultra-reliable low latency communication (URLLC) UEs. The available RBs are distributed using traditional scheduling algorithms such as round robin (RR), proportional fair (PF), and best channel quality indicator (BCQI). Also, the proposed scheme allows the dynamic switching of RR and BCQI scheduling based on specific thresholds, such as signal-to-noise ratio (SNR) values. System-level simulations (SLS)s are performed to evaluate the performance of the proposed approach against the conventional static resource block structure (S-RBS) approach. The simulation results demonstrate that the developed approach provides robust data rate, system throughput, spectral efficiency (SE), and achievable rate per UE for various fifth generation (5G) services.
  • Küçük Resim
    Öğe
    Orthogonal frequency division multiplexing with subcarrier gap modulation
    (Institute of Electrical and Electronics Engineers Inc., 2020) Jaradat, Ahmad Mohammad; Hamamreh, Jehad M.; Arslan, Hüseyin
    A new modulation scheme called orthogonal frequency division multiplexing with subcarrier gap modulation (OFDM-SGM) is proposed. The proposed scheme embeds extra information bits by exploiting the gap between the active subcarriers in each subblock. The proposed scheme differs from the OFDM-index modulation (OFDM-IM), in which information bits are transmitted using the index of active subcarriers. This OFDM-SGM technique provides superior spectral and energy efficiencies compared to the OFDM-IM, particularly when using binary phase-shift keying (BPSK)-like low constellation schemes, that suit the Internet of Things (IoT) applications that have low complexity. The theoretical error performance of the proposed scheme is presented, and the consistency between the theoretically derived error performance and the simulated one is also provided.
  • Küçük Resim
    Öğe
    Radar-aided communication scheduling algorithm for 5G and beyond networks
    (IEEE-Institute of Electrical and Electronics Engineers Inc., 2022) Jaradat, Ahmad Mohammad; Naeem, Ahmed; Sağlam, Mehmet İzzet; Kartal, Mesut; Arslan, Hüseyin
    Radar and communication coexistence is an upcoming technology with numerous research opportunities in the medium access control (MAC) layer, particularly in scheduling and radio resource management (RRM). More efficient scheduling algorithms are needed with the wide range of applications that the wireless environment is experiencing. We investigate an echo-based scenario in the radar-aided vehicular communication system in which an echo is reflected from a target. Unlike the conventional scheduling mechanisms where signal-to-interference-plus-noise ratio (SINR) is exploited, this paper proposes a new radar-aided communication scheduling algorithm by utilizing parameters such as range and velocity with the classical SINR measurements. The proposed algorithm schedules the available resources by extracting information from the radar echo. The proposed radar-aided communication scheduling scheme provides a more flexible design by adding new parameters, resulting in a more efficient algorithm in a broad variety of scenarios. The proposed scheme is beneficial for B5G communication systems that allow localization and sensing as key features of next-generation wireless networks.