公开(公告)号：US11070256B2

公开(公告)日：2021-07-20

申请号：US16853992

申请日：2020-04-21

Applicant: SOLiD, INC.

Inventor： Youngin Kim ,  Seongwook Byun ,  Hosik Jang

IPC: H04B7/02 ,  H04B7/024

Abstract: A communication node processing a communication signal in a distributed antenna system includes a data appearance frequency monitor configured to receive a communication signal including a sign bit string, a count leading zero bit string, and an additional data bit string, and to monitor data appearance frequency in the count leading zero bit string included in the received communication signal, a Huffman encoder configured to encode the count leading zero bit string into a corresponding codeword according to a Huffman encoding algorithm based on the data appearance frequency in the count leading zero bit string and an additional bit allocator configured to allocate additional bits to the additional data bit string when the number of bits in the count leading zero bit string decreases during the encoding process.

公开(公告)号：US10056917B2

公开(公告)日：2018-08-21

申请号：US15397921

申请日：2017-01-04

Applicant: SOLiD, Inc.

Inventor： Donghoon Hong ,  Hosik Jang ,  Youngin Kim

IPC: H03M7/30 ,  G06F7/485 ,  G06F7/556 ,  G06F7/48

CPC classification number: H03M7/30 ,  G06F7/4824 ,  G06F7/483 ,  G06F7/485 ,  G06F7/556 ,  H03M7/24

Abstract: A data compression device includes an analog to digital converter (ADC) configured to convert an analog signal into a digital signal including in-phase and quadrature components; and a compressor configured to generate a 28-bit fixed-point digital signal in which bits of the in-phase and quadrature components are alternately arranged, generate an exponent bit string by comparing n most significant bits of a data bit string excluding two sign bits in the 28-bit fixed-point digital signal with preset mapping data, wherein the exponent bit string includes 4 bits, generate a mantissa bit string composed of 14 bits corresponding to up to 14th bit from a bit next to the n most significant bits of the data bit string, and generate a 20-bit floating point digital signal by combining the two sign bits, the exponent bit string, and the mantissa bit string, wherein n is a natural number equal to or greater than 2 and equal to or less than 12.