The theory behind cellular telephony dates back to the 1940s, although it wasn't until the 90s that the technology had advanced enough to put the theory into practice. Anticipating the burgeoning interest in wireless communication in networking and mobile computing, CSL expanded its efforts in these areas.
Wireless Communication Systems
Researchers formulated innovative universal receivers for CDMA communications. They also discovered new, efficient methods for acquiring spread-spectrum signals, suppressing interference, and equalizing CDMA receivers.
Today, some of these techniques are being incorporated into third-generation cellular telephone systems.
Wireless and Hybrid Networks
Internet network protocols, such as TCP/IP, were designed for wireline networks and do not work well in either wireless or hybrid wireless/wireline networks. CSL improved the interfaces between the wireline and wireless portions of hybrid networks.
CSL established important scaling laws for wireless networks - laws that predict how performance is affected as the number of nodes in a wireless network increases.