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The computational complexity of such a decoder is approximately the same as that of an HE-AAC decoder operating in normal stereo mode, where AAC decoding, QMF analysis filtering, and SBR processing have to be carried out for both channels of a stereo signal [55, 57]. Figure 24 Decoder structure of HE-AAC v2.
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Even after a tremendous effort in speed optimization of the filtering algorithms, the filter can easily account for one-third of the computational complexity of a decoder [35].
One idea is to use a linear block decoder in the analog part (it is of course difficult to assume such a decoder during system optimization).
The circular Viterbi algorithm (CVA -based deCVA -basedtly redecoderhe implementation complexity of a decoder for tail-bitingreatlyises and preduces near-optheal block error rate performance.
The complexity of hardware implementation of a decoder also depends on the decoding algorithm and the structure of the parity check matrix.
Our goal is to reduce the decoding complexity of a turbo decoder operating with high-rate constituent encoders.
The complexity of an LDPC decoder for IEEE 802.11n codes was derived through logical synthesis on a low-power 65 nm CMOS technology targeting MHz.
For high performance and low computational complexity of the decoder, a new adaptive distributed encoder is proposed, with received MVs to increase channel coding performance.
The expressions for the complexity of the SISO decoder, not being treated in a separate section, is given as derived in [30].
This table shows that the additional computational complexity of the proposed decoder, due to multiple side information refinement passes, is compensated by a faster turbo decoding.
Fixed sphere decoder is a breath-first search algorithm proposed to further reduce the complexity of K-Best decoder.
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