The maximum squared correlation, sum capacity, and total asymptotic efficiency of minimum, total-squared-correlation binary signature sets

被引:52
作者
Karystinos, GN [1 ]
Pados, DA
机构
[1] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA
[2] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA
基金
美国国家科学基金会;
关键词
binary sequences; code-division multiple access (CDMA); code division multiplexing; codes; signal design; spread-spectrum communications; Welch bound;
D O I
10.1109/TIT.2004.839542
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The total squared correlation (TSC), maximum squared correlation (MSC), sum capacity (C-sum), and total asymptotic efficiency TAE) of underloaded signature sets, as well as the TSC and C-sum of overloaded signature sets are metrics that are optimized simultaneously over the real/complex field. In this present work, closed-form expressions are derived for the MSC, C-sum and TAE of minimum-TSC binary signature sets. The expressions disprove the general equivalence of these performance metrics over the binary field and establish conditions on the number of signatures and signature length under which simultaneous optimization can or cannot be possible. The sum-capacity loss of the recently designed minimum-TSC binary sets is found to be rather negligible in comparison with minimum-TSC real/complex-valued (Welch-bound-equality) sets.
引用
收藏
页码:348 / 355
页数:8
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