あらまし マルチ送受信アンテナ(MIMO)空間多重を用いる直交周波数分割多重(OFDM)伝送の信号分離法とし て,QR 分解と M アルゴリズムを用いる演算量削減型最尤検出(QRM-MLD)が MLD に近い誤り率特性を達成するこ とが知られている.筆者らは以前,シングルキャリア(SC)伝送を対象に最小平均二乗誤差規範に基づく周波数領域 等化(MMSE-FDE)出力より事後確率を計算してシンボル候補を絞り込むことで演算量を削減する,2 ステップ QRM-MLブロック信号検出(QRM-MLBD)を提案した.2ステップQRM-MLD は SC伝送だけではなく,MIMO-OFDM 伝送にも適用できる.本稿では,MMSE 規範に基づく線形検出(MMSED)を第 1 ステップに用いる 2 ステップ QRM-MLD を MIMO-OFDM 伝送に適用する.QRM-MLD においては送信信号の検出...

In February 2007, the American Bar Association (“ABA”) revised its Model Code of Judicial Conduct, including significant changes in both form and substance.1 The adoption of the 2007 Judicial Code concluded a three-and-a-half year revision process by the ABA Joint Commission to Evaluate the Model Judicial Code (“Commission”).2 During the revision process, the Commission solicited comment on a n...

We have mapped the barred spiral NGC 5383 using the BIMA millimeter-wave array for observations of CO (J=1–0), the Palomar 1.5m for Hα and optical broadband, and the Kitt Peak 1.3m for near-IR broadband. We compare the observed central gas and dust morphology to the predictions of recent hydrodynamic simulations calculated using the Piner, Stone, and Teuben code. In the nuclear region, our obse...

Nowadays, the information processing system plays crucial part in the internet’s. Online information security has become the top priority in all different sectors. Failing to provide online information security may cause loss of critical information or someone may use or distribute such information for malicious for various purpose. Recently QR barcodes have been used as an effective way to sec...

Online media content distributions require methods to protect the intellectual property of distributed content. Intellectual property protection measures preserves the ownership rights of original work so that no one can plagiarize the work in any way without seeking permission for the use and, if necessary, paying a royalty for the usage. Digital watermarking is one such technology in electron...

The aim of this study is to compare complete genomes to identify preserved large DNA fragments in order to analyse evolution process. For this purpose, we propose an efficient method to identify conserved regions between multiple genomes. We first transform each complete genome into a permutation of Maximal Unique Matches (MUMs). Secondly, we compute the longest common sequence of MUMs in the s...