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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Bounds on Space-Time-Frequency Dimensionality · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/cs_0701055/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/cs_0701055/feed.xml" rel="self" type="application/rss+xml" /><item><title>Bounds on Space-Time-Frequency Dimensionality — mentioned by femto</title><link>https://news.ycombinator.com/item?id=9111101</link><guid isPermaLink="false">urn:hackerpapers:mention:cs_0701055:9111101</guid><pubDate>Thu, 26 Feb 2015 03:25:37 GMT</pubDate><description>&lt;p&gt;It&amp;#x27;s a simulation [1]. The claim is that the technique is applicable to center frequencies below 6GHz and the 1Tbit/s used a bandwidth of 100MHz (for a spectral efficiency of 10^7 bit/s/Hz???). I&amp;#x27;m guessing that whilst the technique might be applicable below 6Ghz, the 1TB/s rate isn&amp;#x27;t. There are fundamental limits on the information capacity of an antenna using the EM spectrum [2], based on the surface area of the volume of space it occupies, in units of wavelength. (Related to the Holographic Principle?) I haven&amp;#x27;t done the calculation, to see if the claimed rate is within this limit, but a…&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/cs_0701055/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>cs.IT</category></item></channel></rss>
