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Adaptive equalization in hybrid DS-TH CDMA system using State-Space RLS with Adaptive Memory
- Source :
- 2017 IEEE 2nd International Conference on Opto-Electronic Information Processing (ICOIP).
- Publication Year :
- 2017
- Publisher :
- IEEE, 2017.
-
Abstract
- Modern wireless communication networks need to support a variety of data intensive applications in various medium/channel scenarios. It requires high network throughput as well as robustness against Multiuser Interference (MUI), multipath fading and other channel effects. This is achieved by using the hybrid Direct Sequence Time Hopped CDMA (DS-TH CDMA) systems. In this paper, a novel usage of State-Space Recursive Least Squares with Adaptive Memory (SSRLSWAM) with non-coherent detection is proposed for adaptive equalization of DS-TH CDMA system. The proposed algorithm is able to mitigate multipath fading effects through adaptive equalization by effectively initializing the SSRLSWAM and tuning its forgetting factor. The choice to use non-coherent detection is made because of the fact that non-coherent detectors do not utilize the phase information at the receiver side, resulting in lowering computational complexity. The BER performance of the proposed algorithm is compared with the correlating detector and Minimum Mean Square Error (MMSE) detector. It is shown that SSRLSWAM results in BER performance better than both the correlating and MMSE.
- Subjects :
- Recursive least squares filter
Engineering
Adaptive memory
Minimum mean square error
business.industry
Code division multiple access
ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS
020206 networking & telecommunications
Adaptive equalizer
Data_CODINGANDINFORMATIONTHEORY
02 engineering and technology
03 medical and health sciences
0302 clinical medicine
Robustness (computer science)
Adaptive system
Computer Science::Networking and Internet Architecture
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
business
030217 neurology & neurosurgery
Multipath propagation
Computer Science::Information Theory
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2017 IEEE 2nd International Conference on Opto-Electronic Information Processing (ICOIP)
- Accession number :
- edsair.doi...........5d1c98aecd7d704ae3a5f2460713fc21