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Simulation Results Optimization Problem Primary Synchronization Signal Indoor Environment Modulation Scheme Cross-Correlation Performance Gain Adaptive Algorithm IEEE 802.11 DCF Symbol Mapping Novel Approach Low Complexity Relay Channel Phase Noise Channel Parameters Inner Surface Interpolation Scheme Analytical Results Mobile Devices Distributed Antenna Systems(DAS) Backoff Algorithm Carrier Frequency Offset Propagation Channel Fifth-Generation(5G) Normalized Lms Algorithm(NLMS) Channel Characterization Golden Section Search Method Signal-To-Noise Channel Capacity Frequency Recovery Time Cost 16-Ary Quadrature Amplitude Modulation(16QAM) Wireless Networks Multiple Links New Modulation Outdoor Environments Signal Noise Ratio(SNR) Linear Constraints Matched Filter(MF) Spatial Correlation Signal Detection Exponential Increase Wireless Communication Systems Detection Performance Indoor Scenario High Frequency Band Mobile Communication Systems System Capacity One-Dimension Power Consumption Zadoff-Chu Sequences Frequency Offset Estimation And Compensation Spatial Multiplexing(SMX) Future Network Measurement Errors Angular Resolution Conservation Of Energy Existing Schemes Propagation Path Saturation Throughput Secondary Synchronization Signal(SSS) Visible Range Search Time Ber Performance Low-Cost Multilevel Modulation Retry Limit Communication Technologies Random Perturbation As 2 Amplify-And-Forward (Af) Adjustable Parameters Cell Search Cell Identification Binary Exponential Backoff Adaptive Mode Switching Closed-Loop Mimo Gradient Descent Algorithm Path Management Transmission Mechanism Cubic Spline Interpolation Large-Scale Fading Power Spectrum System Requirements Analysis Model Experimental Investigation Detector Design Industrial Internet Of Things Device-To-Device Communication Gray Code Mobile Networks Pre-Coding Symbol Rate D2d Communication IEEE 802.16(WIMAX) Multipoint Transmission Mapping Rule Non-Coherent Demodulation Network Infrastructure Doppler Frequency Log-Likelihood Function Timing Accuracy Numerical Results Analytical Performance Medium Access Delay Relay Station Parameter Estimation Modulation Level Desired Properties In-Band Full-Duplex(IBFD) Initial Access Model Parameter Correlation Properties Data Collected Analytical Comparison Coherence Time Line-Of-Sight Propagation Synchronization Performance Cell Identity Dimension Optimization Differential Detection Performance Advantages IEEE 802.15.4 LR-WPAN Multi-Relay Computer Simulation(MC and MD) Harmful Effect Measurement Data Random Jitter Wireless Personal Area Network(WPAN) Hardware Impairments Cost Function Next-Generation Open Innovation Performance Degradation Analysis And Evaluation Pss Detection Beamforming Scheme Correlation Characteristics Transmission System Side Lobe Timing Synchronization Timing Detection Key Components Sage Algorithm Numerical And Experimental Performance Improvement Computational Complexity Optimum Performance Physical Layer Security(Physec) Multi-Dimension Superior Performance Spatial Auto-Correlation Conventional Beamforming(CBF) Das System Hybrid Arq Scheme Number Of Probabilities Time Precision Sequence Design Optimization Methodology Time-Critical Security Gap Error Signal False Detection Performance Analysis Electromagnetic Waves Spatial Channel Model Security Properties Battery Consumption Industrial Iot Maximum Likelihood (Ml) Estimation Experimental Data Mimo System Time Based Relaying Systems Correlation Effect Cell Coverage Iot Systems Performance Metrics