Index Catalog // ScholarsArchive@OSU

Creator:: Whang, Younghoon
Abstract:: Hybrid automatic repeat request (HARQ) schemes combine packet retransmission with forward error correction to ensure a reliable communications. In multiple-input multiple output (MIMO) systems, interference cancellation (IC) detection is widely used where the detection and cancellation steps of the simultaneously transmitted data streams occur. In principle, the signal stream estimated...
Resource Type:: Dissertation
Full Text:: . . . . . . . . 45 3.4 Probability of each Pt with the conventional strategy when NT = NR = 2, R = 2, B = NT and

Creator:: Trullinger, Von
Abstract:: The desire to apply short-range wireless communication systems to telemetry sensor networks in a metal-enclosed chamber has prompted this study. This thesis will discuss the design of an infrared (IR) communication system for a wireless low-power, low-data- rate sensor network in a metal enclosure. This design requires an in-depth understanding...
Resource Type:: Masters Thesis
Full Text:: ·B (1.10) Ij = √ 4KTB R (1.11) where Id is the leakage current, B is the system bandwidth, K is

Creator:: Zhang, Tingwei
Abstract:: In this paper, a Direction of Arrival (DOA) based system is proposed. This method searches the direction relative to the array to find where the signal source is located. The proposed system can achieve sub-meter level accuracy with a near real-time update rate. Also, we introduced several refinement methods including...
Resource Type:: Masters Thesis

Creator:: Gao, Jie
Abstract:: Designing spectral efficient, high-speed wireless links that offer high quality- of-service and range capability has been a critical research and engineering challenge. In this thesis, we mainly address the complexity and performance issues of channel estimation and data detection in multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems over...
Resource Type:: Dissertation
Full Text:: 25 30 35 40 SNR(dB) A ve ra ge ( or e rg od ic ) C ap ac ity (b its /s ec /H z

Creator:: Alsulaimawi, Zahir Ahmed Hussein
Abstract:: Deep learning is becoming the latest trend in sensitive applications, such as healthcare, criminal justice, and finance. As these new applications emerge, adversaries are circumventing them. Further, there have been concerns about the possibility of bias and discrimination in predictive applications. In order to address these issues, we propose an...
Resource Type:: Dissertation

Creator:: Zhang, Yu
Abstract:: Orthogonal frequency division multiplexing (OFDM), which has been very attractive for future high rate wireless communications, is very robust to channel multipath fading effect while providing high transmission data rate with high spectral efficiency. Multiple antennas can be combined with OFDM to increase diversity gain and to improve spectral efficiency...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 APPENDIX B Closed-form expression of {Υ}ij in the presence of phase noise 92 APPENDIX C Variance

Creator:: Liu, Wei
Abstract:: Multiple-input multiple-output (MIMO) antennas can be exploited to provide high data rate using a limited bandwidth through multiplexing gain. MIMO combined with orthogonal frequency division multiplexing (OFDM) could potentially provide high data rate and high spectral efficiency in frequency-selective fading channels. MIMO-OFDM technology has been widely employed in modern communication...
Resource Type:: Dissertation
Full Text:: channel estimation; (b) I/E based channel matrix manipulation. . 15 2.2 Linear and second-order

ScholarsArchive@OSU