CDMA soft handoff analysis in the presence of power control error and shadowing correlation

Reverse link performance of packet data with LDPC and soft handoff in cellular CDMA

“…A new packet is generated as soon as the preceding packet is delivered successfully. The soft handoff region and rest of the system parameters is defined as in [3,8] and in Fig.1.…”

“…Reverse link performance analysis in terms of capacity in presence of soft handoff in cellular CDMA has been carried out in [3]. In the present paper we have investigated incorporation of LDPC codes for reverse link application of data service and compared their performance to that of uncoded reverse link application.…”

The Dynamic Capacity in the Forward Link of CDMA Systems With Correlated BS Powers

“…Similar to the power-control algorithm used in previous studies [1], [4], [10], when the SIR at the MS is below the target value, all BSs in the soft-handoff set are asked to transmit more power to the MS, and the amount of BS power P ku allocated to the MS is assumed to be equal for all BSs in the soft-handoff set, which means φ u = P ku /P max is also equal for all BSs in the softhandoff set. Since the power control is usually conducted in the unit of decibel, the PCE in decibels ξ e is commonly modeled as a normal variable with zero mean and standard deviation σ e [2], [3].…”

“…In [2], a closed-form expression of the capacity was derived by assuming certain distributions for the interferences and signals. In [3], the system capacity of soft handoff was obtained by mostly computer simulations and rough estimations. In [4], an ON/OFF mixed traffic model was used to study the forward-link capacity by obtaining the Chernoff bound of the outage probability.…”

Integrated power and handoff control for next generation wireless networks

“…Since CDMA gained popularity in early 1990s, there has been numerous studies conducted on modeling and analysis of soft handoff [17][18][19][20][21][22][23][24], that either concentrated on evaluating the performance of the algorithms in the standards [21,24], or analyzing the effects of various parameters such as the speed of the vehicle, call duration, and the size of handoff region on system performance [17-20, 22, 23]. An alternative approach to soft handoff design was carried out in [14,[25][26][27] which motivates the problems considered in this paper, and therefore these works are discussed in more detail below.…”