Advanced Wireless Communication Techniques

Emerging technologies such as dynamic time division duplexing (D-TDD) in 5G and full-duplex (FD), both considered for 6G, promise higher spectral efficiency and lower latency. D-TDD flexibly allocates uplink and downlink resources to match traffic, while FD enables simultaneous transmission and reception on the same b…

Reproducibility capsule for the article: B. Gülbahar, "M-QAM MIMO Maximum-Likelihood Detection with QAOA: ML-Rate Offline Angle Design and Correlated Infinite-Size Spin-Glass Models," arXiv e-prints, 2026. One command (`bash run.sh`) runs three stages: (0) an engine gate validating the correlated V_p^corr Newton–GMRES…

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This paper presents a SystemVerilog-based modeling and simulation methodology for a 4-level pulse-amplitude-modulation (PAM-4) transceiver. The framework is developed to address verification challenges in complex analog-to-digital converter (ADC)-based mixed-signal systems, where conventional circuit-level simulations…

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Detection performance in MIMO communication systems is commonly analyzed in terms of Signal to Noise Ratio (SNR), channel conditions, and detector design. However, the role of post-equalization feature-space geometry in shaping detection behavior remains insufficiently understood. In this paper, a geometry ratio, defi…

As integrated sensing and communication (ISAC) emerges as a key enabler for future 6G networks, optimizing energy efficiency (EE) of ISAC systems has become very important. This study focuses on the EE maximization problem in hybrid beamforming for ISAC systems. To tackle this complex nonconvex optimization problem, w…

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This paper investigates the performance of faster-than-Nyquist (FTN) signaling within the context of hyper-reliable low-latency communications (HRLLC), specifically focusing on the challenges imposed by the short-packet regime. While traditional Nyquist-based systems maintain symbol orthogonality to prevent inter-symb…

This paper investigates the performance of faster-than-Nyquist (FTN) signaling within the context of hyper-reliable low-latency communications (HRLLC), specifically focusing on the challenges imposed by the short-packet regime. While traditional Nyquist-based systems maintain symbol orthogonality to prevent inter-symb…

This paper studies the constrained-capacity for precoded faster-than-Nyquist (FTN) signaling with finite-alphabet inputs. Despite the promise of accelerated transmission, the fundamental rate limit of precoded FTN signaling under practical finite-alphabet constraints remains unclear. By introducing cyclic prefix (CP)…

This paper studies the constrained-capacity for precoded faster-than-Nyquist (FTN) signaling with finite-alphabet inputs. Despite the promise of accelerated transmission, the fundamental rate limit of precoded FTN signaling under practical finite-alphabet constraints remains unclear. By introducing cyclic prefix (CP)…