Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Pilot Symbol Assisted Modulation"”.
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Combining Channel Sounding and Guessing Random Additive Noise Decoding
… and data transmission is investigated for pilot symbol assisted modulation schemes. Using a soft-information variant of the GRAND algorithm called Ordered Reliability Bit Guessing Random Additive Noise Decoding- Approximate Independence (ORBGRAND-AI), it is shown that by accounting for the …
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On performance analysis of optimal diversity combining with imperfect channel estimation
… channel knowledge. The bit error rate for BPSK modulation over correlated Rayleigh and Ricean fading channel is derived for minimum mean square channel estimation using pilot symbol assisted modulation. Analytical result and Monte-Carlo simulation are presented for specific channel and …
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Channel Related Optimization of Wireless Communication Systems
… systems as well. The influence of different pilot patterns is analyzed when pilot symbol assisted modulation, PSAM, is used in OFDM systems. It is desirable to decrease the number of required pilot symbols and it is shown that the pilot pattern used plays a major role to enable reliable …
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On the Impact of Channel and Channel Quality Estimation on Adaptive Modulation
… wireless systems are designed by choosing a modulation scheme to meet worst case conditions and thus rely on power control to adapt to changing channel conditions. Adaptive modulation, however, exploits these channel variations to improve the spectral efficiency of wireless communications by …
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Near-capacity fixed-rate and rateless channel code constructions
… with the aid of a technique, referred to as pilot symbol assisted rateless (PSAR) coding, whereby a predetermined fraction of pilot bits is appropriately interspersed with the original information bits at the channel coding stage, instead of multiplexing pilots at the modulation stage, as in …
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Transceiver Design with Iterative Decoding of Capacity-Approaching codes over Fading channels
… consider LDPC and turbo coded transmissions with pilot-symbol-assisted (PSA) channel estimation over time correlated Rayleigh channels with known statistics. The correct conceptual approach is presented for deriving the LLR metric, which is shown to outperform the conventional metric in both error …
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Channel Prediction for Adaptive Modulation in Wireless Communications
… thesis examines the benefits of using adaptive modulation and coding in terms of spectral efficiency and probability of bit error. Specifically, we examine the performance enhancement made possible by using linear prediction along with channel estimation in conjunction with adaptive modulation. …