What Is Complementary Code Keying (CCK)?
It's a bird! It's a plane! No, it's the Barker Code! The Barker Code is an 11-bit binary sequence used to transmit data wirelessly before switching to Complementary Code Keying (CCK). The CCK is a shorter 8-bit binary sequence with a faster shipping rate, which means it can achieve higher data rates at the expense of shorter range distances. Both the Barker Code and CCK are used in Wireless Local Area Networks (WLANs), but we've found that some people still need help distinguishing between them. So here are some ways to tell them apart: Barker Codes are longer than CCKs. CCKs are eight bits long, and Barker Codes are eleven bits long. CCKs can achieve higher data rates than Barker Codes but have a shorter range distance. If you're using a WLAN at home or work, you need help to go as far from your access point before losing signal strength when using CCK instead of Barker Code. Mary Orthogonal Keying (MOK) was a good start. It was like the first version of a new car. It worked well enough to get you where you wanted to go, but it didn't have all the extras that make your life easier and more enjoyable. For example, MOK was built for 1 and 2 Mbps wireless networks. That's fine if you're driving around town or on your way to work, but if you want to take a cross-country road trip in style, then CCK is what you need! CCK is the latest in complementary code keying technology—it can go over 5.5 Mbps and 11 Mbps, which means that when your friends are still trying to figure out how to get their seatbelts buckled before they hit 120 mph (or 64 meters per second), you'll already be cruising along at five times that speed with no problem at all!
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