... busy tone multiple access (DBTMA)—a multiple access control scheme for ad hoc networks,” IEEE Transactions on Communications, vol. 50,pp. 975–985, June 2002.doi :10. 1109 /TCOMM.2002 .101 0617[18] ... correlation between the lth path of the kth user and the mth path of 10 20 30 40 50 60 70 80 90 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 10 0Probability of bit errorNumber of active users0-stage1-stage2-stage3-stage4-stage9-stageFIGURE ... pp. 795–799, August 1977.doi :10. 1109 /TCOM.1977 .109 3915P1: IML/FFX P2: IMLMOBK023-05 MOBK023-Buehrer.cls September 28, 2006 15:56166 CODE DIVISION MULTIPLE ACCESS (CDMA) where Zk,l,i,nis the...