EurAsia-ICT '02 Proceedings of the First EurAsian Conference on Information and Communication Technology
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Throughput analysis of multiple access system with hybrid ARQ in wireless networks
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
BER-based chunk allocation in multiuser OFDM wireless systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A simple pilot position detection technique for channel estimation of SC-FDE
IEEE Communications Letters
Cooperative distributed antenna systems for mobile communications
IEEE Wireless Communications
Low-complexity resource allocation and its application to distributed antenna systems
IEEE Wireless Communications
Distributed antenna system capacity scaling
IEEE Wireless Communications
A joint channel estimation and synchronization algorithm for high speed digital IR-UWB system
IEEE Communications Letters
IEEE Transactions on Communications
A novel timing synchronization method for OFDM systems
IEEE Communications Letters
Relay selection with ANC and TDBC protocols in bidirectional relay networks
IEEE Transactions on Communications
Multiple LDPC-Encoder Layered Space-Time-Frequency Architectures for OFDM MIMO Multiplexing
Wireless Personal Communications: An International Journal
| Hi-index | 0.07 |
The coherent RAKE reception of wideband code division multiple access (W-CDMA) signals with complex spreading is considered. A general multipath-fading channel model is assumed. A dedicated pilot channel, which is separate from the data channels, is used for the purpose of channel estimation. Based on a digital implementation, the coherent demodulation scheme is presented. Pilot channel estimation error, due to multiple access and multipath interference, is studied. The system performance is evaluated by means of the bit error rate (BER). The analysis shows that the error of channel estimation significantly degrades system performance and can be effectively suppressed by low pass filters (LPFs). A discussion on the envelope variation of complex spread signals is also included, which illustrates that the complex spread signal has a more stable envelope than the dual-channel spread signal. The power ratio of pilot to data channels should be chosen in the range of 0.2 to 0.4 (or -7 to -4 dB), in order to achieve maximum system capacity