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تسجيل مستخدم جديدتحليل مبني على فيزياء الحالة الإحصائية ل CDMA المنتشرة بشكل قليل
Sparsely-spread CDMA - a statistical mechanics based analysis
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أقدم وأحلل Sparse Code Division Multiple Access (CDMA)، وهو تغيير على الطريقة القياسية لCDMA التي تحتوي على مصفوفة الانتشار (التوقيع) تحتوي فقط على عناصر غير صفر بكمية قليلة باستخدام طرق الفيزياء الإحصائية. وتوفر التحليل نتائج عن أداء التشخيص الأقصى بحثا عن الرموز النادرة في حالة النظام الكبير. ونقدم نتائجا لكلا الحالتين من المصفوفات الانتشار المنتظمة وغير المنتظمة لقناة الضوضاء الأبيض الإضافي الثنائي (BIAWGN) مع مقارنة مع الرمز العشوائي القياسي (الكثيف).
Sparse Code Division Multiple Access (CDMA), a variation on the standard CDMA method in which the spreading (signature) matrix contains only a relatively small number of non-zero elements, is presented and analysed using methods of statistical physics. The analysis provides results on the performance of maximum likelihood decoding for sparse spreading codes in the large system limit. We present results for both cases of regular and irregular spreading matrices for the binary additive white Gaussian noise channel (BIAWGN) with a comparison to the canonical (dense) random spreading code.
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