In this work we consider the performance of turbo coded OFDM systems in the presence of co-channel interference (CCI) in reuse-1 OFDM systems such as 802.16d/e and LTE. Because of frequency selectivity and diversity mapping, CCI does not affect all the subcarriers of the desired user. Hence CCI behaves like Narrow Band Interference(NBI) with the number of affected subcarriers ranging from 10% t...

BACKGROUND The purpose of this study was to assess the value of narrow band imaging (NBI) endoscopy in the diagnosis of pharyngolaryngeal lesions and to demonstrate the validity of a new NBI-based classification of their vascular pattern. METHODS From 2009 to 2011, 248 patients with pharyngolaryngeal lesions underwent NBI-endoscopic evaluation. NBI findings were classified into 5 types accord...

BACKGROUND Capillary patterns (CP) observed by magnifying Narrow Band Imaging (NBI) are useful for differentiating non-adenomatous from adenomatous colorectal polyps. However, there are few studies concerning the effectiveness of magnifying NBI for determining the depth of invasion in early colorectal neoplasms. We aimed to determine whether CP type IIIA/IIIB identified by magnifying NBI is eff...

PURPOSE To evaluate the diagnostic values of Auto Fluorescence Imaging (AFI) combined with Narrow Band Imaging (NBI) in the diagnosis of the intraepithelial neoplasia of Barrett's esophagus (BE). METHODS Seventy four suspicious BE intraepithelial lesions were assessed in 50 patients by AFI, who were further subjected to NBI mode to observe the changes of gastric mucosal capillaries and gastri...

For high data rate ultra wideband communication system, performance study of mutual interference such as suppression of interference signal by performing pulse shaping from UWB to other narrowband system using wavelet technique and reduction of interference from other narrowband system to UWB system in conjunction with Transmitted-Reference (TR-UWB) signaling scheme with adaptive receivers is a...

OBJECTIVES To assess the additional detection rate (ADR) of within-patient comparisons of Narrow band imaging (NBI) and white light cystoscopy (WLC) for non-muscle invasive bladder cancer (NMIBC) detection and compare the impact of NBI and WLC on bladder cancer recurrence risk. METHODS We searched relevant studies from PubMed, Embase, Medline, Web of Science and the Cochrane Library database ...

BACKGROUND AND STUDY AIMS Although magnifying endoscopy with narrow-band imaging (ME-NBI) is reported to be useful for delineating the horizontal extent of early gastric cancers (EGCs), there are few reports which have objectively demonstrated the superiority of ME-NBI over chromoendoscopy with indigo carmine for this purpose. We conducted an exploratory comparison of the diagnostic accuracy of...

Laryngeal papillomatosis has a high rate of recurrence after surgery. Narrow band imaging (NBI) is a novel optical enhancement technology used for the diagnosis. This is the first report to date to indicate the availability of the combination of laryngomicro surgery and videoendoscopic surgery for laryngeal papillomatosis using NBI technology. The patients were a 34-year-old man and a 30-year-o...

OFDM systems experience BER degradation in the presence of narrowband interference (NBI). We propose a novel NBI cancellation algorithm for a wideband OFDM receiver. Modelling the NBI as a single-tone sinusoid, subspace-based (SB) methods can be used to estimate it. However, direct application of SB methods to the received signal yields poor results except when the system is operating at very l...