Turbo Codes with Modified Code Matched Interleaver for Coded-Cooperation in Half-Duplex Wireless Relay Networks
-
Saqib Ejaz
and
Feng-Fan Yang
Abstract
The parallel encoding and decoding structure of turbo codes makes them natural candidate for coded-cooperative scenarios. In this paper, we focus on one of the key components of turbo codes i.e., interleaver, and analyze its effect on the performance of coded-cooperative communication. The impact of an interleaver on the overall performance of cooperative systems depends on the type of an interleaver and its location in the cooperative encoding scheme. We consider code matched interleaver (CMI) as an optimum choice and present its role in a coded-cooperation scenario. The search and convergence of CMI for long interleaver sizes is an issue; therefore, a modification in the search conditions is included without any compromise on the performance of CMI. We also present analytical method to determine maximum S-constraint length for a CMI design. Further, we analyze the performance of two different encoding schemes of turbo codes, i.e., distributed turbo code (DTC) and distributed multiple turbo code (DMTC) after inclusion of CMI. Monte Carlo simulations show that CMI increases the diversity gain relative to other conventional interleavers such as uniform random interleaver. The channel is assumed to be Rayleigh fading among all communication nodes.
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Articles in the same Issue
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- An Adaptive Cooperative Strategy for Underlay MIMO Cognitive Radio Networks: An Opportunistic and Low-Complexity Approach
- Opportunistic Channel Scheduling for Ad Hoc Networks with Queue Stability
- Turbo Codes with Modified Code Matched Interleaver for Coded-Cooperation in Half-Duplex Wireless Relay Networks
Articles in the same Issue
- Frontmatter
- Design and Implementation of an Adaptive Space–Time Antenna Array for GPS Receivers
- Novel Compact Mushroom-Type EBG Structure for Electromagnetic Coupling Reduction of Microstrip Antenna array
- Gain Improvement of Microstrip Patch Antenna Using CLS Split Ring Resonator Metamaterial
- Microwave Material Properties of Nanoparticle-Doped Nematic Liquid Crystals
- Attenuation in Superconducting Rectangular Waveguides
- Time–Frequency Distribution Analyses of Ku-Band Radar Doppler Echo Signals
- Optimal Beamforming and Performance Analysis of Wireless Relay Networks with Unmanned Aerial Vehicle
- Cluster-Based Multipolling Sequencing Algorithm for Collecting RFID Data in Wireless LANs
- An Adaptive Cooperative Strategy for Underlay MIMO Cognitive Radio Networks: An Opportunistic and Low-Complexity Approach
- Opportunistic Channel Scheduling for Ad Hoc Networks with Queue Stability
- Turbo Codes with Modified Code Matched Interleaver for Coded-Cooperation in Half-Duplex Wireless Relay Networks
