Olwal, TOVan Wyk, MAVan Wyk, BJ2010-01-222010-01-222009Olwal, TO, Van Wyk. MA and Van Wyk, BJ. 2009. Discrete polyphase matched filtering-based soft timing estimation for mobile wireless systems. International Journal of Electronics, Communications and Computer Engineering, Vol.1(2), pp 123-1302073-0543http://hdl.handle.net/10204/3913Copyright: 2009 World Academy of Science, Engineering and TechnologyIn this paper the authors present a soft timing phase estimation (STPE) method for wireless mobile receivers operating in low signal to noise ratios (SNRs). Discrete Polyphase Matched (DPM) filters, a Log-maximum a posterior probability (MAP) and/or a Soft-output Viterbi algorithm (SOVA) are combined to derive a new timing recovery (TR) scheme. The authors apply this scheme to wireless cellular communication system model that comprises of a raised cosine filter (RCF), a bit-interleaved turbo-coded multi-level modulation (BITMM) scheme and the channel is assumed to be memory-less. Furthermore, no clock signals are transmitted to the receiver contrary to the classical data aided (DA) models. This new model ensures that both the bandwidth and power of the communication system is conserved. However, the computational complexity of ideal turbo synchronization is increased by 50%. Several simulation tests on bit error rate (BER) and block error rate (BLER) versus low SNR reveal that the proposed iterative soft timing recovery (ISTR) scheme outperforms the conventional schemes.enDiscrete polyphase matched filtersMaximum likelihood estimatorsSoft timing phase estimationWireless mobile systemsWireless cellular communicationSoft-output viterbi algorithmArticleOlwal, T., Van Wyk, M., & Van Wyk, B. (2009). Discrete polyphase matched filtering-based soft timing estimation for mobile wireless systems. http://hdl.handle.net/10204/3913Olwal, TO, MA Van Wyk, and BJ Van Wyk "Discrete polyphase matched filtering-based soft timing estimation for mobile wireless systems." (2009) http://hdl.handle.net/10204/3913Olwal T, Van Wyk M, Van Wyk B. Discrete polyphase matched filtering-based soft timing estimation for mobile wireless systems. 2009; http://hdl.handle.net/10204/3913.TY - Article AU - Olwal, TO AU - Van Wyk, MA AU - Van Wyk, BJ AB - In this paper the authors present a soft timing phase estimation (STPE) method for wireless mobile receivers operating in low signal to noise ratios (SNRs). Discrete Polyphase Matched (DPM) filters, a Log-maximum a posterior probability (MAP) and/or a Soft-output Viterbi algorithm (SOVA) are combined to derive a new timing recovery (TR) scheme. The authors apply this scheme to wireless cellular communication system model that comprises of a raised cosine filter (RCF), a bit-interleaved turbo-coded multi-level modulation (BITMM) scheme and the channel is assumed to be memory-less. Furthermore, no clock signals are transmitted to the receiver contrary to the classical data aided (DA) models. This new model ensures that both the bandwidth and power of the communication system is conserved. However, the computational complexity of ideal turbo synchronization is increased by 50%. Several simulation tests on bit error rate (BER) and block error rate (BLER) versus low SNR reveal that the proposed iterative soft timing recovery (ISTR) scheme outperforms the conventional schemes. DA - 2009 DB - ResearchSpace DP - CSIR KW - Discrete polyphase matched filters KW - Maximum likelihood estimators KW - Soft timing phase estimation KW - Wireless mobile systems KW - Wireless cellular communication KW - Soft-output viterbi algorithm LK - https://researchspace.csir.co.za PY - 2009 SM - 2073-0543 T1 - Discrete polyphase matched filtering-based soft timing estimation for mobile wireless systems TI - Discrete polyphase matched filtering-based soft timing estimation for mobile wireless systems UR - http://hdl.handle.net/10204/3913 ER -