Title :
A study on channel estimation methods for time-domain spreading MC-CDMA systems
Author :
Nagate, Atsushi ; Fujii, Teruya
Author_Institution :
Wireless Syst. Res. Center, Softbank Mobile Corp., Tokyo
fDate :
12/1/2008 12:00:00 AM
Abstract :
In time-domain spreading MC-CDMA systems, which are candidates for the 4G system, data and pilot symbols are spread in the time domain and code-multiplexed. To combat fading issues, we need to conduct channel estimation by using the code-multiplexed pilot symbols. In this paper, we propose a channel estimation method for highly accurate channel estimation; it is a combination of a two-dimensional channel estimation method and an impulse response-based channel estimation method. We evaluate the proposed method by computer simulations.
Keywords :
4G mobile communication; channel estimation; code division multiple access; time-domain analysis; 4G system; code-multiplexed pilot symbols; impulse response-based channel estimation method; multicarrier code division multiple access; time-domain spreading MC-CDMA systems; two-dimensional channel estimation method; Bit error rate; Channel estimation; Computer simulation; Fading; Frequency domain analysis; Frequency estimation; Multiaccess communication; Multicarrier code division multiple access; OFDM; Time domain analysis; MC-CDMA, time domain spreading, channel; estimation, weight, coherent addition.;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/T-WC.2008.071182
