bicm 中文意思是什麼
bicm
解釋
建設部北京建築機械綜合研究所-
Design and performance analysis of labeling map methods for bicm - id
比特交織編碼及迭代譯碼系統的標識映射設計及性能分析 -
In detail, they are bit - interleaved coded modulation ( with iterative decoding ), low - density parity - check codes and stf technology. by the performance analysis of bicm ( - id ), which can make code and modulation optimal separately, and achieve maximum possible coding diversity as well as modulation gain, guidelines for its design and an easy algorithm for siso are proposed. design of capacity - approaching of ldpc codes and efficient encoding of them as well as several kinds of its decoding algorithms are investigated
具體的講，就是討論了基於比特交織的編碼調制技術，並給出了映射方式的設計準則以及核心模塊siso的一種簡單的f - map演算法；研究了編碼最小漢明距隨碼長線性增加的ldpc碼的幾個方面的問題，包括接近香農限碼子集的度分佈對的設計、有效編碼器的實現和各種譯碼演算法的優缺點，並對基於ldpc碼的bicm應用於ofdm傳輸系統中的性能進行了模擬。 -
Second, this paper design the simulation scheme of bicm for comparing the performance over fading channel and awgn channel that combine 2 / 3 rate, 4 states punctured convolutional code with 8psk modulation, matching block interleave or random interleave, transform through rayleigh channel or awgn channel and use the way that combine coherent demodulation with viterbi decoding in receiver. design the scheme of bicm _ id that use the iterative decoding technique and the scheme of tcm for compare
為了驗證bicm和bicm _ id在衰落通道和加性高斯白噪聲通道（ awgn ）下的性能，設計了一個2 / 3碼率， 4狀態的鑿孔卷積碼經過塊交織或隨機交織，與8psk調制相結合，在rayleigh通道下或awgn通道下傳輸，接收端採用相干解調與維特比譯碼相結合的bicm方案，在接收端引入迭代反饋譯碼的bicm _ id方案，以及與之相比較的tcm方案。 -
We compare the performance of bicm to tcm, the performance of bicm to bicm _ id and the performance of bicm using block interleave to that using random interleave over rayleigh channel in simulation scheme. and compare the performance of bicm to tcm and bicm _ id over awgn channel in addition
方案比較了rayleigh通道下bicm與bicm _ id的性能， bicm與tcm的性能，以及採用塊交織的bicm與採用隨機交織的bicm的性能，在awgn通道下bicm與tcm和bicm _ id的性能。 -
The simulation results show that bicm is better than tcm, bicm _ id is better than bicm when the second round decoding
模擬結果表明: rayleigh通道下bicm的性能較tcm有很大提高。 -
Theory analsis and simulation result show that proposed bp - mlc - id scheme could approach the same channel capacity as mlc while has very low complexities as bicm
給出了系統在準靜態mimo衰落通道下的誤碼率性能限。 -
First, this paper analyses a bicm model and the bicm _ id model based on combination of convolutional code and 8psk modulation, and introduces the principle and key technique
本文分析了一個基於卷積碼和8psk調制相結合的bicm模型和相應的bicm _ id模型，介紹了它們的原理和其中的關鍵技術。 -
The performance of tcm over awgn channel is perfect but it is bad over fading channel. there is an effective method to solve this problem that combines interleave technique with coded modulation to get the gain of performance over fading channel. this paper is about a new coded modulation technique ? ? bicm ( bit interleaved coded modulation ) and bicm _ id ( bicm with iterative decoding ), and their performance of bit error rate in different conditions
本文研究的就是一種將交織技術與編碼調制相結合的新的編碼調制方式? ?比特交織編碼調制（ bicm ， bitinterleavedcodedmodulation ） ，和引入迭代反饋譯碼的比特交織編碼調制（ bicm _ id ， bicmwithiterativedecoding ） ，及它們在不同通道條件下的性能。
分享友人