Abstract
In this paper, we propose an LDPC-coded OFDMA system with a resource allocation method suitable for the uplink of mobile cellular environments. At the receiver of the proposed system, an iterative channel estimation and decoding (IED) method with a Wiener filter adapting to the channel variation rate is employed to support high mobility without boosting the pilot power. For practical applications, the channel variation rate is also estimated with pilot symbols to select Wiener filter coefficients for every received packet dynamically allocated. It is shown that the proposed system supports the mobility up to 250 km/h and exhibits more than 1 dB performance gain over the system with conventional non-iterative receiver.
| Original language | English |
|---|---|
| Pages (from-to) | 2478-2482 |
| Number of pages | 5 |
| Journal | IEEE International Conference on Communications |
| Volume | 4 |
| Publication status | Published - 2004 Aug 30 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Media Technology
Cite this
}
Iterative estimation and decoding for an LDPC-coded OFDMA system in uplink environments. / Kim, Yun Hee; Kim, Kwang Soon; Ahn, Jae Young.
In: IEEE International Conference on Communications, Vol. 4, 30.08.2004, p. 2478-2482.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Iterative estimation and decoding for an LDPC-coded OFDMA system in uplink environments
AU - Kim, Yun Hee
AU - Kim, Kwang Soon
AU - Ahn, Jae Young
PY - 2004/8/30
Y1 - 2004/8/30
N2 - In this paper, we propose an LDPC-coded OFDMA system with a resource allocation method suitable for the uplink of mobile cellular environments. At the receiver of the proposed system, an iterative channel estimation and decoding (IED) method with a Wiener filter adapting to the channel variation rate is employed to support high mobility without boosting the pilot power. For practical applications, the channel variation rate is also estimated with pilot symbols to select Wiener filter coefficients for every received packet dynamically allocated. It is shown that the proposed system supports the mobility up to 250 km/h and exhibits more than 1 dB performance gain over the system with conventional non-iterative receiver.
AB - In this paper, we propose an LDPC-coded OFDMA system with a resource allocation method suitable for the uplink of mobile cellular environments. At the receiver of the proposed system, an iterative channel estimation and decoding (IED) method with a Wiener filter adapting to the channel variation rate is employed to support high mobility without boosting the pilot power. For practical applications, the channel variation rate is also estimated with pilot symbols to select Wiener filter coefficients for every received packet dynamically allocated. It is shown that the proposed system supports the mobility up to 250 km/h and exhibits more than 1 dB performance gain over the system with conventional non-iterative receiver.
UR - http://www.scopus.com/inward/record.url?scp=4143114562&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4143114562&partnerID=8YFLogxK
M3 - Conference article
VL - 4
SP - 2478
EP - 2482
JO - Conference Record - International Conference on Communications
JF - Conference Record - International Conference on Communications
SN - 0536-1486
ER -