PERFORMANCE OF CAPTURE-DIVISION PACKET ACCESS WITH SLOW SHADOWING ANDPOWER-CONTROL

Recently, a new method for achieving improved spectrum reuse in cellul ar systems, called capture-division packet access (CDPA), has been int roduced, The method uses a single frequency in all cells, but, unlike code-division multiple access (CDMA), it allows each transmitter to ex ploit the full bandwidth, Practically, the CDPA's way of operation can be seen as a slotted ALOHA scheme among different cells in which the mobile terminals belonging to the same cell transmit using a collision -free mechanism, which is easily obtained due to the very short intrac ell propagation delay, Parallel transmission in different cells is ach ieved through the ''capture'' capability, Packets that are not capture d are almost immediately retransmitted, thus assuring that packets are eventually correctly received, In this paper, we analyze the performa nce of the CDPA in the presence of slowly varying shadowing. The gain offered by power-control techniques is also investigated, Finally, the effect of erroneous signaling information is studied, and a brief del ay analysis is presented.