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Dissertation/Thesis Abstract

Coherent power combining on spacecraft via wavefront Multiplexing techniques
by He, Qubao, M.S., California State University, Long Beach, 2013, 80; 1527380
Abstract (Summary)

A novel orthogonal wavefront (WF) Multiplexing (Muxing) and De-Multiplexing (Demuxing) scheme is proposed for uplink from antenna array elements to multiple spacecraft (S/C). By using an adaptive equalization at the receiver of S/C, the phase deviation due to different near field distances of the uplink from antenna array elements to S/C is compensated via the WF Demuxing method on S/C. This scheme allows power combining from antenna array elements to S/C. Besides, this scheme can be extended and applied to multiple S/C. Simulations verify that the proposed scheme achieves the same bit error rate (BER) performance as the theoretical BER in additive white Gaussian noise (AWGN) channels and one path flat fading channel. Furthermore, although the radiated signals among the multiple radiating antenna array elements are non-coherent, the coherent power combining of the radiations of multiple radiating antenna array elements is accomplished on the S/C receiver in the proposed techniques.

Indexing (document details)
Advisor: Yeh, Hen-Geul
Commitee: Khoo, I-Hung, Tsang, Chit-Sang
School: California State University, Long Beach
Department: Electrical Engineering
School Location: United States -- California
Source: MAI 52/05M(E), Masters Abstracts International
Subjects: Electrical engineering
Keywords: Coherent power combining, Deep space communication, Digital signal processing, Wavefront Multiplexing, Wireless communication
Publication Number: 1527380
ISBN: 978-1-303-76655-8
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