This paper describes two dimensional (2d) equalization scheme of orthogonal coding multi-carrier CdMA for reverse link of mobile communication systems. The purpose of the 2d equalization is the reduction of Multiple A...
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This paper describes two dimensional (2d) equalization scheme of orthogonal coding multi-carrier CdMA for reverse link of mobile communication systems. The purpose of the 2d equalization is the reduction of Multiple Access Interference (MAI) which is caused by the random access and the different propagation path from each mobile station. The orthogonal coding multi-carrier CdMA multiplexes all mobile stations' data by Code division Multiplexing (CdM). The 2d coding scheme spreads a preamble signal at time (in subchannel signals) and frequency (between subchannel signals) domains. The 2ddecoding scheme estimates transmission delay time and instantaneous fading frequency from preamble signal for individual mobile stations and compensate the receiveddata using these estimation values to reduce MAI.
This paper presents a low-complexity two-dimensional (2d) detection strategy for shingled magnetic recording (SMR) media. The detection strategy involves the use of multi-level 2d BCJR detector along-track for inter-s...
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ISBN:
(纸本)9781509039821
This paper presents a low-complexity two-dimensional (2d) detection strategy for shingled magnetic recording (SMR) media. The detection strategy involves the use of multi-level 2d BCJR detector along-track for inter-symbol interference (ISI) cancellation and regular BCJR detector across tracks for inter-track interference (ITI) cancellation. This is applied in a multi-track two dimensional magnetic recording (TdMR) system to perform joint track detection. The results show that the multi-level 2d BCJR along track combined with regular BCJR across tracks has significantly less complexity compared to full joint-track detection when carried out on an 8-track SMR media.
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