osing rz0 that minimizes this bound gives the final form (3B.26) which is the same form as in the outbound channel. It is interesting to note that two different assumptions yield the same upper bound for the bit error probability for the S-CDMA interference-lim- ited channel. For the outbound channel, interference to each mobile unit is caused by transmissions of other base stations. It is assumed that each base station balances its transmitted signals over both in-phase and quadrature coordinates. For the inbound channel, each base station receives interference from all mobile units in other microcells. Here, the phase of each microcell signal is random and independent of other signal phases. The fact that the bound is the same under differing conditions supports our intuition that the error bound developed here is quite robust and will be useful in many interference-limited cases. These bounds assume coher- ent DS/BPSK signals. With an appropriate adjustment, this same bound applies to the differentially coherent DS/DBPSK and DS/QPSK signals. All the interference is in J0, which is the sum of the squares of each of the interfering signal's cross-correlation with the receiver's codeword. These cross-correlation terms are evaluated at the synchronized sample time of the receiver in question. Timing errors and other impairments can be evaluated by adding their effects to the terms given in J. Signals within a microcell, e.g., may have some timing errors and may contribute to the cross-correla- tion terms summed in J0- The analysis is still the same. The usefulness of this new bound lies in the fact that various assumptions about the interference can be easily evaluated as long as cross-correlation values can be computed. Chapter INDEX A-CDMA (asynchronous code division Antenna sectorization, 1181 multiple access), 1175-1176, 1178-1180 Antheil, G., 63 Absorbing state, 765 Anti-jam (AJ) performance, 1087 Acknowledgment, 1103, 1109 Anti-jam (AJ) protection, 1034 Acquisition (transient) behavior of PN code Anti-jammin