A multipath transmission diversity scheme using prediction-based transmitter filter in FDD-CDMA systems

Author

Naidu, Rama K. ; Kumar, Raja R V ; Lamba, T.S.

Author_Institution

Dept. of Electron. & Electr. Commun. Eng., Indian Inst. of Technol., Kharagpur

fYear

0

fDate

0-0 0

Lastpage

5

Abstract

A multipath transmission diversity scheme using predictive transmitter filter in the frequency division duplex-code division multiple access systems (FDD-CDMA) is introduced over a multipath fading channel. A transmitter filter is added in the transmitter, while a Rake combiner is used in the receiver. To design the transmitter filter at the base station for the current slot, we utilize the downlink channel impulse response (CIR) of the previous slots. It is assumed that the downlink CIR is transmitted from the mobile terminal to the base station. In addition, to compensate inherent feedback delays occurring during the transmission of channel information from mobile terminal to the base station, the channel prediction is utilized. Results show that the new scheme can significantly improve the output signal to noise ratio (SNR) compared with conventional Rake receiver

Keywords

code division multiple access; diversity reception; fading channels; frequency division multiple access; mobile radio; multipath channels; radio receivers; radio transmitters; FDD-CDMA systems; Rake combiner; Rake receiver; base station; channel information transmission; channel prediction; downlink channel impulse response; frequency division duplex-code division multiple access systems; inherent feedback delays; mobile terminal; multipath fading channel; multipath transmission diversity scheme; prediction-based transmitter filter; signal to noise ratio; Base stations; Delay; Downlink; Fading; Feedback; Filters; Frequency conversion; RAKE receivers; Signal to noise ratio; Transmitters; CIR; FDD-CDMA; FIR Transmitter filter; RAKE receiver;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Networks, 2006 IFIP International Conference on

Conference_Location

Bangalore

Print_ISBN

1-4244-0340-5

Type

conf

DOI

10.1109/WOCN.2006.1666606

Filename

1666606