Background: The aim was to compare the diagnostic efficacy of ultrasonography (USG) and hysteroscopy in detecting uterine abnormalities in abnormal uterine bleeding (AUB) by correlating the results with histopathological examination.Methods: This prospective study was conducted among women attending gynecological OPD of Subharti medical college, Meerut over a period of two years from October 2019 to August 2021. A total of 100 perimenopasual women with AUB attending obstetrics and gynaecology OPD were included in this study. All patients underwent transvaginal scan to note down the endometrial thickness and to rule out uterine and adnexal pathology. All the patients underwent diagnostic hysteroscopy, followed by a biopsy of the endometrium using a curette. The endometrium was sent to the pathologist. Findings of these diagnostic modalities then correlated.Results: Out of 100 women, USG detected that 54 patients (54%) had no pathology and 46 patients (46%) had abnormal findings, out of which maximum patients, 29 patients (63.04%) had endometrial hyperplasia. According to hysteroscopy, 46 patients (46%) had normal hysteroscopic findings while 54 patients (54%) had abnormal findings of which maximum were 18 patients (33.33%) who had endometrial hyperplasia. Histopathology findings revealed that 47 patients (47%) had normal findings and 53 patients (53%) had abnormal findings out of which maximum patients 20 (37.7%) had endometrial hyperplasia. In our study of 100 women with AUB, on USG only 1 patient had endometrial malignancy and the same was reported by hysteroscopy and histopathology.Conclusions: In our study hysteroscopy proved to be highly sensitive and specific considering histopathology as gold standard. Ultrasonography has good sensitivity and specificity but less as compared to hysteroscopy.

WiMAX which represents "Worldwide Interoperability for Microwave Access" is a major part of BWN "broadband wireless network" having IEEE 802.16 standard provides innovative fixed as well as mobile platform for broadband internet access anywhere in anytime. In this paper we, investigate signal detection and frame synchronization for wireless network signal using preamble detection method such as MSC, MGM, MMSE and MML and preamble we used AWGN and Reyligh channel, also used modulation techniques QAM with OFDM. The performance has been concluded based Sample versus Detection value and output through MATLAB-R3013a Simulation.