A solution for performance improvements of OFDM-CDMA system with pilot tone

Author

Urosevic, Ugljesa ; Veljovic, Zoran ; Simunic, D. ; Radusinovic, Igor

Author_Institution

Fac. of Electr. Eng., Univ. of Montenegro, Podgorica, Montenegro

fYear

2012

fDate

20-22 Nov. 2012

Firstpage

350

Lastpage

353

Abstract

In this paper, MISO OFDM-CDMA downlink scheme is proposed as a solution for improving performance of the OFDM-CDMA downlink system with pilot tone and threshold detection combining (optimum TDC). The new presented system with MISO included uses space-time block coding applied to two and four transmit antennas. BER (Bit Error Rate) performance in the case of Ricean frequency selective fading is evaluated for the original system as well as for the one with MISO included. For that reason an adequate simulation model is developed. The results show that the proposed system significantly outperforms the OFDM-CDMA downlink system with pilot tone and optimum TDC.

Keywords

OFDM modulation; block codes; code division multiple access; error statistics; BER; MISO OFDM-CDMA downlink scheme; OFDM-CDMA downlink system; OFDM-CDMA system; Ricean frequency selective fading; adequate simulation model; bit error rate; optimum TDC; pilot tone; space-time block coding; threshold detection; transmit antennas; Bit error rate; Downlink; Multiaccess communication; OFDM; Receiving antennas; Signal to noise ratio; Transmitting antennas; BER; CDMA; MISO; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Forum (TELFOR), 2012 20th

Conference_Location

Belgrade

Print_ISBN

978-1-4673-2983-5

Type

conf

DOI

10.1109/TELFOR.2012.6419219

Filename

6419219