Illinois Superconductor Sees 70% Capacity Improvement for CDMA Systems

Superconducting technology suppler Illinois Superconductor Corp. (Mount Prospect, IL) has achieved improvements in CDMA capacity during testing on a densely populated urban commercial cell site in the US. After installing ISC's SpectrumMaster Classic filter, an operator saw cell site capacity increase from 16 to 27 simultaneous users per radio, which represents a 70% increase in capacity.

These capacity improvements are believed to result from SpectrumMaster Classic's filtering, which minimizes interfering signals, reduces out-of-band noise, and typically lowers subscriber handset power by 4dB. Further analysis of the test data indicates that under certain circumstances, the filter could increase capacity by as much as 100%. Increased capacity provides operators with the ability to handle rapidly growing cellular traffic while reducing capital expenditures.