臺灣博碩士論文加值系統

根據Beaulieu無窮級數公式，我們分析所考率的快速跳頻頻移鍵控探測（
acquisition）接收機的效能。此一接收機乃採用非相位（ non-
coherent）、雜訊正規化（noise normalized）、匹配濾波器的相關式檢
測（correlation　detection）。可在搜尋模態下，做快速探測。其分析
效能是以兩個探測機率來表示。它們分別為偵測機率（detection
probability）與錯誤警報機率（false alarm probability）。而所考慮
的通訊環境，則包含AWGN通道、受部分頻帶雜訊干擾（partial band
noise jamming）的AWGN通道、衰褪通道（fading channel）及受部分頻
帶雜訊干擾的衰褪通道等四種。其中衰褪通道的衰落模型包含Rayleigh,
Rician, Nakagami-m 等。此外我們進一步討論天線分集（ antenna　
diversity）在衰褪通道中的效能，並研究天線增益不等（ antenna　
imbalance）的作用。

Based on Beaulieu's convergent series approach, we present the
performance analysis of a fast frequency-hopped binary
orthogonal frequency-shift keying acquisition receiver for
communication against adverse environments. The receiver
employs noncoherent, noise- normalized, match-filtered
correlation detection for rapid acquisition in the search mode.
Our analysis includes four types of communication environments,
namely pure AWGN channel, AWGN channel with partial-band noise
jamming, fading channels, and fading channel with partial-band
noise jamming. The considered fading models include Rayleigh,
Rician, and Nakagami-m. The performance results for
various environments are presented in terms of two
acquisition probabilities, namely the detection probability
and the false alarem probability. The effect of fading on the
considered acquisition system with antenna diversity is also
investigated. In particular, the gain imbalance of the
resultant diversity system is deliberately considered.