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What are the differences between UL-SCH (uplink shared channel) and PUSCH (physical uplink shared channel)?

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The question comes from this block diagram where we find both UL-SCH and PUSCH:

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Sriram Tadavarty
Sriram Tadavarty el 14 de Mzo. de 2022
Hi Federico,
UL-SCH stands for uplink shared channel and is a transport channel, which performs CRC addition, code block segmentation, channel coding, and rate-matching on the input transport block. The outcome of the UL-SCH is the coded and rate-matched bits of input transport block.
PUSCH stands for physical uplink shared channel and is responsible for converting the coded bits into modulated symbols. PUSCH performs scrambling, symbol modulation, layer mapping, transform precoding (if applicable), precoding and followed by resource mapping.
The processing steps involved in both the channels are different, as mentioned above. Thus, there are two blocks present in the diagram.
Regards,
Sriram

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