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Novel Results on 3G Reconfigurable Outer Block Interleaving Based on FER

Novel Results on 3G Reconfigurable Outer Block Interleaving Based on FER,10.1007/s11277-009-9859-0,Wireless Personal Communications,Costas Chaikalis,N

Novel Results on 3G Reconfigurable Outer Block Interleaving Based on FER   (Citations: 2)
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Outer block interleaving and time transmission interval (TTI) are two interrelated parameters for the design of 3G systems. Particularly, they represent a critical issue for the implementation of UMTS turbo coding in flat Rayleigh fading channels. Thus, an efficient TTI choice can save computational complexity. In this paper different scenarios are investigated using the maximum UMTS frame length and simulation results are presented for the four possible outer block interleaver configurations in the case of flat Rayleigh fading channel. Considering frame error rate (FER) performance we propose a TTI of 80 ms for rural and urban/suburban outdoor operating environments for the majority of scenarios. For indoor/low range outdoor operating environment 20 ms is the proposed choice apart from low data rates.
Journal: Wireless Personal Communications - WIREL PERS COMMUN , vol. 57, no. 4, pp. 521-531, 2011
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    • ...Comparing the corresponding outer block interleaver number of columns proposed in [6, 7] for log-MAP turbo decoding algorithm, in this work we observe different values for a data rate of 384 kbps and BER performance...
    • ...Similar approach has been followed in [6] and [7], using log-MAP turbo decoding algorithm...
    • ...FER ACCORDING TO [7] FOR FER AND [6] FOR BER...
    • ...simulation results in the case of log-MAP turbo decoding algorithm which have been observed in [6] and [7] for comparison purposes...
    • ...Comparing the corresponding proposed values in [6] and [7] for log-MAP (Table II), we observe different TTI value for a data rate of 384 kbps...

    Costas Chaikaliset al. Novel results on adaptive UMTS outer block interleaving using SOVA tur...

    • ...Similar approach has been followed in [6] and [7], using log-MAP turbo decoding algorithm...
    • ...A summary of our simulation results as a compromise between BER/FER performances and outer interleaver complexity for a constant frame length of 5114 bits, can be seen in Table 1. Similarly, Table 2 presents the corresponding simulation results, observed in [6, 7] for comparison purposes...
    • ...Comparing the corresponding proposed values in [6, 7] for log-MAP turbo decoding algorithm (Table II), we observe different TTI value for 28.8 kbps...
    • ...BASED ON BER/FER PERFORMANCE ACCORDING TO [6, 7]...

    Costas Chaikaliset al. UMTS Dynamic Outer Interleaver Reconfiguration for Indoor Environment ...

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