Title :
Performance of a space-code adaptive receiver in multi-cell DS-CDMA wireless networks
Author :
Cavalcanti, F.R.P. ; Romano, J.M.T. ; Brandão, A.L.
Author_Institution :
Dept. of Commun., State Univ. of Campinas, Brazil
Abstract :
We estimate the relative capacity of a DS-CDMA multiple cell wireless network employing short codes and adaptive receivers. In particular, a space-code adaptive receiver is presented and analyzed. Both optimum minimum mean squared error (MMSE) and direct matrix inversion (DMI) algorithm-based receivers are considered. Several training sequence lengths are considered. The sensitivity of the receivers to the rate of DMI adaptation is also analyzed. Finally, relative capacity is derived taking into account the performance losses due to DMI imperfect adaptation with respect to MMSE
Keywords :
adaptive systems; cellular radio; channel capacity; code division multiple access; error statistics; least mean squares methods; matrix inversion; multiuser channels; radio networks; radio receivers; spread spectrum communication; BER estimation methods; DMI adaptation rate; MMSE; direct matrix inversion algorithm; multi-cell DS-CDMA wireless networks; network capacity; optimum minimum mean squared error; performance; receiver sensitivity; relative capacity; short codes; space-code adaptive receiver; training sequence lengths; AWGN; Adaptive arrays; Antenna arrays; Base stations; Intelligent networks; Multiaccess communication; Performance loss; Power system modeling; Receiving antennas; Wireless networks;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778015
