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|標題:||Performance analysis of 2-D O-CDMA codes without the chip-synchronous assumption||作者:||Hsu, C.C.
|關鍵字:||carrier hopping prime codes;chip asynchronous;optical code division;multiple access;optical hard-limiting;division multiple-access;optical hard-limiters;beat noise;ocdma;systems;prime codes;coherent;memory;networks;design||Project:||Ieee Journal on Selected Areas in Communications||期刊/報告no：:||Ieee Journal on Selected Areas in Communications, Volume 25, Issue 6, Page(s) 135-143.||摘要:||
In this paper, the performance of two-dimensional optical codes with cross-correlation functions of at most one, such as the carrier-hopping prime code (CHPC), is analyzed without the traditional chip-synchronous assumption. In addition to the Gaussian approximation method, we apply a combinatorial technique for a more accurate analysis, especially when there exists only a small number of simultaneous users. It is known that an optical hard-limiter can be placed at the front end of a receiver to reduce the effect of multiple-access interference. We also derive the hard-limiting error probability under the chip-asynchronous assumption. Finally, the performance improvement of the CHPC with the hard-limiting and chip-asynchronous assumptions is studied.
|Appears in Collections:||通訊工程研究所|
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