| DC 欄位 |
值 |
語言 |
| DC.contributor | 通訊工程學系 | zh_TW |
| DC.creator | 郭家展 | zh_TW |
| DC.creator | Chia-Chan Kuo | en_US |
| dc.date.accessioned | 2005-7-13T07:39:07Z | |
| dc.date.available | 2005-7-13T07:39:07Z | |
| dc.date.issued | 2005 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=92523022 | |
| dc.contributor.department | 通訊工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 在同調偵測下，用多層編碼的區塊編碼調變(BCM)是具有頻寬效益的編碼架構，而最近提出一個新的用於非同調偵測的區塊編碼調變架構，稱作非同調區塊編碼MPSK(noncoherent block coded MPSK , NBC- MPSK)。藉由這個架構，數種非同調區塊碼可以輕易的由選擇適當的成份碼獲得，由於最大相似解碼的複雜度極高，所以使用多階層解碼以做為NBC-MPSK實際上解碼時可行的方法。
多階層解碼一般使用以籬柵為基礎的維特比解碼法則。但在有些情況下，解碼會相當的複雜甚至不可能實現。A*解碼法目前已經被使用在線性區塊碼的最大相似解碼上，且減少了搜索路徑。在本篇論文中，我們利用A*解碼法的概念用在非同調區塊編碼調變上，在電腦模擬結果上也展現了令人滿意的效能以及大幅的降低複雜度。 | zh_TW |
| dc.description.abstract | For coherent detection, block coded modulation encoded by multilevel coding is a bandwidth efficient scheme. Recently, a novel block coded modulation scheme for noncoherent detection called noncoherent block coded MPSK (NBC- MPSK) is proposed. Many noncoherent block codes can be easily obtained by properly choosing binary linear block codes as the component codes. However, maximum-likelihood decoding is complicated, so using multilevel decoding is a practical way to decode NBC-MPSK.
In general, the trellis-based Viterbi algorithm is directly perceived for multilevel decoding. However, it becomes prohibitively complex and impractical to implement in some situations. A* decoding algorithm has been used to implement maximum-likelihood decoding of linear block codes. Moreover, it reduces the searching edges. In this thesis, we apply A* algorithm to ML decoding for NBC-MPSK. The satisfactory error performance and substantially reducing complexity are showed by computer simulation. | en_US |
| DC.subject | A*解碼法 | zh_TW |
| DC.subject | 區塊編碼調變 | zh_TW |
| DC.subject | 多層級解碼 | zh_TW |
| DC.subject | 非同調解碼 | zh_TW |
| DC.subject | block coded modulation | en_US |
| DC.subject | multilevel decoding | en_US |
| DC.subject | noncoherent detection | en_US |
| DC.subject | A* decoding algorithm | en_US |
| DC.title | 用於非同調區塊編碼MPSK的最大可能性解碼演算法 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Maximum-Likelihood Decoding Algorithms for Noncoherent Block-Coded MPSK | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |