Effects of multipath fading on BER statistics in cellular CDMA networks with fast power control

Effect of Power Control Imperfections on the Reverse Link of Cellular CDMA Networks Under Multipath Fading

“…It is clear that simulation results agree with our analytical model with great accuracy. From this figure we can conclude that the usual approach of considering that the intercell interference is a fraction of the intracell interference (see, for example, [13]) results in an important underestimation of the intercell interference variance, leading to very optimistic results [16], [17] Simulations have also been obtained to validate our BER results as a function of the number of users per cell, as shown in Fig. 3.…”

“…If inequality (13) does not hold, the mobile will switch to BS0 and will generate intracell interference. Note that condition (13) is equivalent to (14) with (15) Therefore, the moment of order of the intercell interference generated by an active mobile located in region will be given by (16) The second, third, and fourth factors in (16) are the same as those calculated in (9)- (11), and the first factor can be shown to be given by [15], [19] (17)…”

“…Though the interference statistics are accurately calculated by numerical analysis, only one isolated cell is considered. The impact of power control imperfections on a multicell CDMA system is examined in [13], but average intercell interference is accounted for by considering that it is a fraction of average intracell interference, while we have shown in [16] and [17] that this simplification leads to very optimistic results. An analysis explicitly considering the interference due to other-cell users can be found in [14] for a system in which shadowing is not considered and users connect to the nearest base station.…”

Channel fading measurement and statistics of the eCall minimum set of data transmission

“…Fading phenomena can reduce voice signal strength. The GSM system employs power control to adjust the transmission power of the BTS and the mobile station (MS) to preserve the quality of the voice call and reduce the overall network interference in a timevarying mobile channel [20][21][22]. The BTS and MS measure the received signal quality (RxQual) and received signal level (RxLev) every 480 ms [23].…”

Interference statistics of cellular ds/cdma systems with base station diversity under multipath fading

“…Usually, the effect of multipath fading on system capacity is implicitly considered in the required energy per bit to interference density ratio [1], [2]. However, the joint effect of power control and multipath fading will significantly affect interference statistics, which are closely related to capacity in CDMA systems [3], [4]. In addition, while great efforts have been made to characterize intercell interference, intracell interference is usually oversimplified or not taken into account in the derivation of interference statistics.…”