Author: Claude D'AmoursPublisher:
ISBN:
Category : Code division multiple access
Languages : en
Pages : 180
Book Description
Differential and Coherent RAKE Receivers for DS-CDMA in Frequency-selective Rayleigh Fading Channels
Author: Claude D'AmoursPublisher:
ISBN:
Category : Code division multiple access
Languages : en
Pages : 180
Book Description
The Performance of Matched-filter and MMSE Receivers for DS-CDMA Systems in Multipath Fading Channels
Author: Jeffrey Ronald FoersterPublisher:
ISBN:
Category :
Languages : en
Pages : 330
Book Description
A New Transmit Diversity Scheme with Coherent and Differential Detection for DS-CDMA System Using Complex Spreading Sequence Over Frequency Selective Channel
Author: Srinivas rao VaidyaPublisher:
ISBN:
Category :
Languages : en
Pages : 116
Book Description
[Author's abstract] Transmit diversity technique, like the one in [2], has been found to provide good reliability for a flat fading channel. For CDMA systems there are two popular transmit diversity techniques, which are OTD and STS proposed in [3] [4]. STS scheme outperforms the OTD as, OTD offers temporal diversity, in contrast to spatial diversity offered by STS. For frequency selective channel, performance of the above schemes depends on the correlation properties of the spreading sequence used. Selection of proper spreading sequence with good correlation properties improves the system reliability in presence of MAI. On the other hand coherent detection at the receiver requires the channel knowledge, which is provided by channel estimation at the receiver. But channel estimation for frequency selective channel costs the resources and lowers the data rate due to which differential detection is done which does not require the knowledge of the channel. For the STS scheme which offers spatial diversity by coherent detection, it is not possible to do differential detection, hence channel estimation is necessary. So we propose a new transmit diversity technique which uses a complex spreading sequence called SP [1] sequence, for which coherent as well as differential detection exists. This scheme as the STS offers spatial diversity for both coherent and differential detection.
GLOBECOM '93
Author: Azienda, segni distintivi, concorrenza
Author: Conference Record
Author: Adaptive Receivers for Multirate DS/CDMA Systems Over Frequency-selective Fading Channels
Author: Antonio PauciulloProceedings
Author: Publisher:
ISBN:
Category : Communications, Military
Languages : en
Pages : 582
Book Description
Interference Suppression in DS/CDMA Systems Over Frequency-selective Fading Channels
Author: Stefano Buzzi (ingegnere.)Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Author: Sau-Hsuan Wu