Adaptive Rate Coding for A-CDMA Systems over Slowly Fading Channels

Name: Adaptive Rate Coding for A-CDMA Systems over Slowly Fading Channels
Brand: LAP Lambert Academic Publishing
SKU: 9783843374521
Price: 283.04 RON
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Adaptive Rate Coding for A-CDMA Systems

Autor: Vidhyacharan Bhaskar

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Editura: LAP Lambert Academic Publishing

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This dissertation incorporates rate adaptation schemes for direct sequence spread spectrum systems....

Informații despre carte

Autor

Vidhyacharan Bhaskar

Limbă

engleză

Legare

Carte - Carte broșată

Publicat

2010

Pagini

160

EAN

9783843374521

Enbook ID

06887658

Editura

LAP Lambert Academic Publishing

Greutate

256

Dimensiuni

150 x 220 x 10

Descriere completă

This dissertation incorporates rate adaptation schemes for direct sequence spread spectrum systems. Subspace and pilot-aided methods for channel estimation can be used to estimate the nature of time varying channels. The simulated performance of punctured and repetition codes agrees well with the upper and lower theoretical bounds in hard-decision decoding over Rayleigh and Rician fading channels. The expression for the upper bound on soft-decision decoding is also derived and plotted. An adaptive forward error correction (FEC) coding scheme is proposed to combat the detrimental effects of fading in a mobile multiuser environment. The throughput of the proposed adaptive FEC scheme reaches the highest code rate of the punctured convolutional code used. The throughput of the proposed hybrid automatic repeat request (H-ARQ) scheme exceeds that of the generalized H-ARQ scheme for high signal to noise ratios.

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Adaptive Rate Coding for A-CDMA Systems over Slowly Fading Channels

Adaptive Rate Coding for A-CDMA Systems

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