$B!!(JISM $BBS0h$rMQ$$$?%9%Z%/%H%k3H;6DL?.$K$*$$$F!$9bB.EAAw$,5a$a$i$l$F$$$k!#$=$3$G!$D>@\3H;6J}<0$rMQ$$$F!$(J10$B#M(Jbps $B$NEAAw$r2DG=$K$9$kCY1dB?=EJ}<0$N8!F$$r9T$J$C$?$N$GJs9p$9$k(J¡ $B!!K\Js9p$G$O!$B?=EJ}K!!$B?=E$K$h$kAj8_Aj4X%5%$%I%m!<%V43>D$r=|5n$9$kJ}K!$r<($7!$$3$N2~A1J}K!$K$h$j!$8m$jN($NBgI}$J2~A1$,$G$-$k$3$H!$$5$i$KK\J}<0$,(J DQPSK $BJQD4J}<0$K$bE,MQ$G$-$k$3$H$rJs9p$9$k!#(J $B!!(JWe have investigated the direct sequence spread spectrum system using TDM scheme for the higher data rate communication systems. In the TDM system using shifted Barker codes, the interference occurred by their cross-correlation was unavoidable. In this paper, we present the TDM system and a new interference canceller, and show its performance. And we show this canceller can be used for the communication systems modulated by DQPSK.