An Introduction to Spread-Spectrum Communications
An Introduction to Spread-Spectrum Communications
Digital Beamforming in Wireless Communications
Digital Beamforming in Wireless Communications
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Effect of feedback delay on fixed step and variable step power control algorithms in CDMA systems
ICCS '02 Proceedings of the The 8th International Conference on Communication Systems - Volume 02
Power and rate control with outage constraints in CDMA wireless networks
IEEE Transactions on Communications
A new beamforming structure based on transmit-MRC for closed-loop MIMO systems
IEEE Transactions on Communications
Joint beamforming and power control for multiantenna relay broadcast channel with QoS constraints
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
On the robustness of transmit beamforming
IEEE Transactions on Signal Processing
GMC '10 Proceedings of the 2010 Global Mobile Congress
GMC '10 Proceedings of the 2010 Global Mobile Congress
Robust minimum variance beamforming
IEEE Transactions on Signal Processing
Robust transmit eigen beamforming based on imperfect channel state information
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Variance minimization stochastic power control in CDMA systems
IEEE Transactions on Wireless Communications
Reverse Link Performance of a DS-CDMA System With Both Fast and Slow Power Controlled Users
IEEE Transactions on Wireless Communications
Transmit beamforming and power control for cellular wireless systems
IEEE Journal on Selected Areas in Communications
Open-loop power control error in cellular CDMA overlay systems
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Wireless Personal Communications: An International Journal
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The interference reduction capability of antenna arrays, base station assignment, and the power control algorithms have been considered separately as means to increase the capacity in wireless communication networks. In this paper, we propose smart step closed-loop power control (SSPC) algorithm and base station assignment method based on minimizing the transmitter power (BSA-MTP) technique for direct sequence-code division multiple access (DS-CDMA) receiver in a 2D urban environment. This receiver consists of conjugate gradient adaptive beamforming and matched filter in two stages using antenna arrays. In addition, we study an analytical approach for the evaluation of the impact of power control error (PCE) on the DS-CDMA cellular systems. The simulation results indicate that the SSPC algorithm and the BSA-MTP technique can significantly improve the network bit error rate in comparison with conventional methods. Our proposed methods can also significantly save total transmit power and extend battery life in mobile units. In addition, we show that the convergence speed of the SSPC algorithm is faster than that of conventional algorithms. Finally, we discuss two parameters of PCE and channel propagation conditions (path-loss parameter and variance of shadowing) and their effects on the capacity of the system via some computer simulations.