Abstract
This paper considers the problem of blind symbol detection for the orthogonal frequency-division multiplexing (OFDM) system in the multipath fading channel. Unlike [11] that uses a polynomial to model the variation of channel responses (CRs) across subchannels, we employ the model of channel impulse response (CIR) which takes into consideration of the correlation between the real and imaginary parts of CRs across subchannels. The branch-and-bound principle is used to solve the nonlinear integer programming problem associated with the blind detection problem. We further propose a method to obtain a better initial sequence in each tree search based on channel prediction, and this leads to the complexity reduction for the blind detection algorithm. Simulation results show that by using the CIR model in blind detection, we can obtain better performance than [11], and the complexity reduction based on a better initial sequence is effective.
| Original language | English |
|---|---|
| Title of host publication | 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011 |
| Pages | 1409-1413 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2011 Dec 1 |
| Event | 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011 - Houston, TX, United States Duration: 2011 Dec 5 → 2011 Dec 9 |
Publication series
| Name | 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011 |
|---|
Other
| Other | 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011 |
|---|---|
| Country | United States |
| City | Houston, TX |
| Period | 11-12-05 → 11-12-09 |
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All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Communication
Cite this
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Blind and semiblind detection of OFDM signals in the multipath fading channel. / Chen, Jen Hsien; Chang, Ming-Xian.
2011 IEEE GLOBECOM Workshops, GC Wkshps 2011. 2011. p. 1409-1413 6162418 (2011 IEEE GLOBECOM Workshops, GC Wkshps 2011).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Blind and semiblind detection of OFDM signals in the multipath fading channel
AU - Chen, Jen Hsien
AU - Chang, Ming-Xian
PY - 2011/12/1
Y1 - 2011/12/1
N2 - This paper considers the problem of blind symbol detection for the orthogonal frequency-division multiplexing (OFDM) system in the multipath fading channel. Unlike [11] that uses a polynomial to model the variation of channel responses (CRs) across subchannels, we employ the model of channel impulse response (CIR) which takes into consideration of the correlation between the real and imaginary parts of CRs across subchannels. The branch-and-bound principle is used to solve the nonlinear integer programming problem associated with the blind detection problem. We further propose a method to obtain a better initial sequence in each tree search based on channel prediction, and this leads to the complexity reduction for the blind detection algorithm. Simulation results show that by using the CIR model in blind detection, we can obtain better performance than [11], and the complexity reduction based on a better initial sequence is effective.
AB - This paper considers the problem of blind symbol detection for the orthogonal frequency-division multiplexing (OFDM) system in the multipath fading channel. Unlike [11] that uses a polynomial to model the variation of channel responses (CRs) across subchannels, we employ the model of channel impulse response (CIR) which takes into consideration of the correlation between the real and imaginary parts of CRs across subchannels. The branch-and-bound principle is used to solve the nonlinear integer programming problem associated with the blind detection problem. We further propose a method to obtain a better initial sequence in each tree search based on channel prediction, and this leads to the complexity reduction for the blind detection algorithm. Simulation results show that by using the CIR model in blind detection, we can obtain better performance than [11], and the complexity reduction based on a better initial sequence is effective.
UR - http://www.scopus.com/inward/record.url?scp=84863352205&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863352205&partnerID=8YFLogxK
U2 - 10.1109/GLOCOMW.2011.6162418
DO - 10.1109/GLOCOMW.2011.6162418
M3 - Conference contribution
AN - SCOPUS:84863352205
SN - 9781467300407
T3 - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
SP - 1409
EP - 1413
BT - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
ER -