Demapping device and method
View Patent ↗The present invention provides a demapping device and method. The device includes: an averager receiving a compensation data for determining a degree of the compensation; a demapping function module receiving the compensation data for demapping the compensation data and then outputting a demapped compensation data; a quantizer coupled to the averager and the demapping function module, utilized to quantize the demapped compensation data according to the degree of the compensation and a maximum of quantization; a counter coupled to the quantizer for receiving a quantized data outputted from the quantizer, utilized to count a maximum value and a minimum value within the quantized data and output a counting result, and to simultaneously provide the maximum of quantization for the quantizer; and a compressor coupled to the counter, utilized to compress the counting result to reduce a number of bits.
1. A demapping device, comprising:
an averager receiving a compensation data for determining a degree of the compensation;
a demapping function module receiving the compensation data for demapping the compensation data and then outputting a demapped compensation data;
a quantizer coupled to the averager and the demapping function module, utilized to quantize the demapped compensation data according to the degree of the compensation and a maximum of quantization;
a counter coupled to the quantizer for receiving a quantized data outputted from the quantizer, utilized to count a maximum value and a minimum value within the quantized data under a condition that a ratio of the maximum value and the minimum value is divorced from a predetermined ratio and output a counting result, and to simultaneously provide the maximum of quantization for the quantizer to readjust levels of the quantizer; and
a compressor coupled to the counter, utilized to compress the counting result to reduce a number of bits.
2. The demapping device of claim 1 , wherein the counting result after the compression is inputted into a deinterleaver for decreasing a memory size of the deinterleaver.
3. A demapping method, comprising:
receiving a compensation data for determining a degree of the compensation by an averager;
demapping the compensation data by a demapping function module;
quantizing the demapped compensation data according to the degree of the compensation and a maximum of quantization to obtain a quantized data by a quantizer;
counting a maximum value and a minimum value within the quantized data under a condition that a ratio of the maximum value and the minimum value is divorced from a predetermined ratio to obtain the maximum of quantization to readjust levels of the quantizer and a counting result by a counter; and
compressing the counting result to reduce a number of bits of the counting result by a compressor.
4. The method of claim 3 , wherein the counting result with the reduced number of bits is utilized to decrease a memory size in a deinterleaver.