SFN and CFN
26 Oct 2014在UMTS中，同步是很重要的一项工作。如果同步出现问题，轻则某些用户无法建立通话连接，重则整个小区网络瘫痪。而同步中，有两个重要的概念，经常会碰到。那就是SFN和CFN，所有的物理信道都将基于SFN对齐或做一定的偏置。
Read more在UMTS中，同步是很重要的一项工作。如果同步出现问题，轻则某些用户无法建立通话连接，重则整个小区网络瘫痪。而同步中，有两个重要的概念，经常会碰到。那就是SFN和CFN，所有的物理信道都将基于SFN对齐或做一定的偏置。
Read moreBLER and BER are two of the most important key performance indicators(KPI) in any of those wireless products. Let’s get a quick review about what they mean and what performance they indicate exactly.
Read moreLast time, one of my colleagues asked me an interesting question regarding the difference of modulation between uplink and downlink. And I’d like to share with you here today.
Read moreKind of busy these days. I will simply share some basic knowledge from my personal wiki. The first one is about the definition of E-DCH serving cell.
Read more最近看了John MacCormick写的Nine Algorithms That Changed the Future: The Ingenious Ideas That Drive Today’s Computers。此书为科普读物，适合对计算机不太熟悉但感兴趣的人阅读。国内中信出版社已发行中译版。
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