TY - GEN
T1 - Performances of the superimposition schemes for OFDM systems
AU - Lee, Jun Kyoung
AU - Yang, Jang Hoon
AU - Kim, Dong Ku
PY - 2008
Y1 - 2008
N2 - To increase the spectral efficiency of orthogonal frequency division multiplexing (OFDM) systems, many techniques have been proposed. Recently, we proposed a superimposition scheme which is called the time domain superimposition of data (TDSD). In this paper, we compare the performance of TDSD with the conventional superimposition schemes such as the superimposed periodic pilot in the time domain (SPPT) and the added pilot semi-blind channel estimation (APSB) in terms of channel estimation, bit error rate (BER) performance, relative spectral efficiency, and complexity. The simulation results show that comparing to the conventional OFDM, TDSD can increase the spectral efficiency up to about 20% with the superimposition factor M = 16 while SPPT has the similar efficiency. APSB has the worst efficiency. copyright
AB - To increase the spectral efficiency of orthogonal frequency division multiplexing (OFDM) systems, many techniques have been proposed. Recently, we proposed a superimposition scheme which is called the time domain superimposition of data (TDSD). In this paper, we compare the performance of TDSD with the conventional superimposition schemes such as the superimposed periodic pilot in the time domain (SPPT) and the added pilot semi-blind channel estimation (APSB) in terms of channel estimation, bit error rate (BER) performance, relative spectral efficiency, and complexity. The simulation results show that comparing to the conventional OFDM, TDSD can increase the spectral efficiency up to about 20% with the superimposition factor M = 16 while SPPT has the similar efficiency. APSB has the worst efficiency. copyright
UR - http://www.scopus.com/inward/record.url?scp=66149088351&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=66149088351&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:66149088351
SN - 4885522323
SN - 9784885522321
T3 - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
BT - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
T2 - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
Y2 - 14 October 2008 through 16 October 2008
ER -