Abstract
Single-carrier (SC) block transmission [1][2] is an efficient scheme in multipath channels. With frequency-domain equalization, SC block transmission avoids complex time-domain equalization. There are also several systems proposed that combine SC-FDE with code-division multiple access (CDMA). However, unlike conventional direct-sequence (DS) CDMA, the present CDMA systems with FDE may be not suitable for asynchronous users, for lack of a signal model that could suitably express the despread signal in frequency domain. In this paper, we propose a novel architecture of SC block transmission DS-CDMA that can be applied for asynchronous users. A new signal model is derived that represents spreading, channel effect, and despreading as a series of circular convolutions. This signal model helps in deriving a new frequency-domain minimum mean-square error (MMSE) equalization algorithm for SC block transmission CDMA. Based on the proposed signal model, we also propose a simple channel estimation algorithm. Our architecture and signal model can be applied for further development of multi-user detection algorithms.
| Original language | English |
|---|---|
| Title of host publication | 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall |
| Pages | 892-896 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2006 Dec 1 |
| Event | 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada Duration: 2006 Sep 25 → 2006 Sep 28 |
Publication series
| Name | IEEE Vehicular Technology Conference |
|---|---|
| ISSN (Print) | 1550-2252 |
Other
| Other | 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall |
|---|---|
| Country | Canada |
| City | Montreal, QC |
| Period | 06-09-25 → 06-09-28 |
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All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Cite this
}
A novel architecture of single-carrier block transmission DS-CDMA. / Chang, Ming-Xian; Yang, Chou Chang.
2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall. 2006. p. 892-896 4109456 (IEEE Vehicular Technology Conference).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - A novel architecture of single-carrier block transmission DS-CDMA
AU - Chang, Ming-Xian
AU - Yang, Chou Chang
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Single-carrier (SC) block transmission [1][2] is an efficient scheme in multipath channels. With frequency-domain equalization, SC block transmission avoids complex time-domain equalization. There are also several systems proposed that combine SC-FDE with code-division multiple access (CDMA). However, unlike conventional direct-sequence (DS) CDMA, the present CDMA systems with FDE may be not suitable for asynchronous users, for lack of a signal model that could suitably express the despread signal in frequency domain. In this paper, we propose a novel architecture of SC block transmission DS-CDMA that can be applied for asynchronous users. A new signal model is derived that represents spreading, channel effect, and despreading as a series of circular convolutions. This signal model helps in deriving a new frequency-domain minimum mean-square error (MMSE) equalization algorithm for SC block transmission CDMA. Based on the proposed signal model, we also propose a simple channel estimation algorithm. Our architecture and signal model can be applied for further development of multi-user detection algorithms.
AB - Single-carrier (SC) block transmission [1][2] is an efficient scheme in multipath channels. With frequency-domain equalization, SC block transmission avoids complex time-domain equalization. There are also several systems proposed that combine SC-FDE with code-division multiple access (CDMA). However, unlike conventional direct-sequence (DS) CDMA, the present CDMA systems with FDE may be not suitable for asynchronous users, for lack of a signal model that could suitably express the despread signal in frequency domain. In this paper, we propose a novel architecture of SC block transmission DS-CDMA that can be applied for asynchronous users. A new signal model is derived that represents spreading, channel effect, and despreading as a series of circular convolutions. This signal model helps in deriving a new frequency-domain minimum mean-square error (MMSE) equalization algorithm for SC block transmission CDMA. Based on the proposed signal model, we also propose a simple channel estimation algorithm. Our architecture and signal model can be applied for further development of multi-user detection algorithms.
UR - http://www.scopus.com/inward/record.url?scp=34548816494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548816494&partnerID=8YFLogxK
U2 - 10.1109/VTCF.2006.191
DO - 10.1109/VTCF.2006.191
M3 - Conference contribution
AN - SCOPUS:34548816494
SN - 1424400635
SN - 9781424400638
T3 - IEEE Vehicular Technology Conference
SP - 892
EP - 896
BT - 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
ER -