SS-CDMA Flexible Wireless Network: Implementation of Approximately Synchronized CDMA Modem for Uplink

摘要

We have proposed an intracell uplink of a spread-spectrum code-division multiple-access (SS-CDMA) flex- ible wireless network based on approximately synchronized (AS) CDMA. Since the AS-CDMA has no co-channel interference, Complicated transmission power control (TPC) is not required. A modem of the AS-CDMA has been designed and implemented For the Japanese 2.4 GHz industrial, scientific and medical (ISM) Band. Using the implemented modem, the degradation of E_b/N_0 From the theoretical limit is 1.0 dB at a bit error rate (BER) of 10~-3.