This paper explains briefly what is FDMA-TDMA system, analyzes some of the crucial technical features of the system such as acquisition and synchronization, car-rier hopping, uplink power control, Demand Assigned Multiple Access, controller etc.

Research on Electromagnetic Compatibility between MB-OFDM-UWB and N-CMDA;

Analysis on the coexistence of UWB with N-CDMA;

Study on the Modulator of MC-CDMA System;

Direct Decoding for Space-Time Block Coded MC-CDMA Systems;

A particle swarm optimization(PSO) based multiuser detection(MUD) is proposed for the receive-diversity-aided multi-carrier code-division multiple-access(MC-CDMA) systems in frequency-selective fading channel.

In view of this situation, an uplink space-time channel blind estimation algorithm is proposed for space-time coded multicarrier code division multiple access systems with uniform linear array at the base station in macrocell.

The uniform linear array (ULA) is investigated at the base station of macrocell synchronous multicarrier code division multiple access (MC CDMA) systems in a frequency selective fading channel environment.

In multicarrier CDMA systems,the fixed subchannel allocation cannot update with the channel variety,so it degrades the system performance; and the fixed assignment of spreading sequence reduces the system soft capacity.