Computer Science > Information Theory
[Submitted on 30 Sep 2016 (v1), last revised 10 Nov 2016 (this version, v3)]
Title:Numerical Approach to Maximize SNR for CDMA Systems
View PDFAbstract:Signal to Noise Ratio (SNR) is an important index for wireless communications. There are many methods for increasing SNR. In CDMA systems, spreading sequences are used. To increase SNR, we have to improve spreading sequences. In classical approaches, the expression of SNR is not differentiable in terms of the parameter of the spreading sequences even in no fading situations. Thus, we express it as the differentiable form and construct the non-linear programing for maximizing SNR. In particular, we solve the problem of maximizing SNR numerically by obtaining spreading sequences whose SNR is guaranteed to be high.
Submission history
From: Hirofumi Tsuda [view email][v1] Fri, 30 Sep 2016 02:57:36 UTC (299 KB)
[v2] Mon, 17 Oct 2016 07:57:12 UTC (323 KB)
[v3] Thu, 10 Nov 2016 05:10:05 UTC (322 KB)
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