{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T10:10:11Z","timestamp":1696932611765},"reference-count":16,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2012,3,28]],"date-time":"2012-03-28T00:00:00Z","timestamp":1332892800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Trans. Emerging Tel. Tech."],"published-print":{"date-parts":[[2012,12]]},"abstract":"ABSTRACT<\/jats:title>In this paper, a new blind channel estimation method for orthogonal frequency division multiplexing systems is presented. The proposed approach based on the amplitude\u2010phase constraints of the channel frequency response first estimates the channel amplitude\u2010frequency response, and then calculates the channel\u2010frequency response of the equivalent minimum phase system by its amplitude\u2010frequency response. The zeros of the actual system and its equivalent minimum phase system are symmetric about the unit circle, and the symmetric relationships are easily determined according to the finite alphabet property of information symbols. A semi\u2010blind estimation method based on the blind estimation method is also proposed in this paper, and it greatly reduces the numerical complexity of the blind method. Unlike existing statistical blind channel estimators, the proposed method requires short data records especially for phase\u2010shift keying modulation. Compared with the existing finite alphabet based method, the proposed method has a lower numerical complexity. Comparison of the proposed method with training based estimation method, which is presented by computer simulations, show the effectiveness of the proposed method. Copyright \u00a9 2012 John Wiley & Sons, Ltd.<\/jats:p>","DOI":"10.1002\/ett.2525","type":"journal-article","created":{"date-parts":[[2012,3,31]],"date-time":"2012-03-31T02:57:14Z","timestamp":1333162634000},"page":"707-714","source":"Crossref","is-referenced-by-count":0,"title":["Amplitude\u2010phase constraints based blind and semi\u2010blind channel estimation for OFDM systems"],"prefix":"10.1002","volume":"23","author":[{"given":"Wei","family":"Chen","sequence":"first","affiliation":[{"name":"University of Electronic Science and Technology of China Chengdu Sichuan 611731 China"}]},{"given":"Guang\u2010hui","family":"Liu","sequence":"additional","affiliation":[{"name":"University of Electronic Science and Technology of China Chengdu Sichuan 611731 China"}]},{"given":"Wei\u2010le","family":"Zhu","sequence":"additional","affiliation":[{"name":"University of Electronic Science and Technology of China Chengdu Sichuan 611731 China"}]}],"member":"311","published-online":{"date-parts":[[2012,3,28]]},"reference":[{"key":"e_1_2_8_2_1","volume-title":"Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications","year":"1999"},{"key":"e_1_2_8_3_1","volume-title":"Broadband Radio Access Networks (BRAN): High Performance Radio Local Area Networks (HIPERLAN) Type 2: System Overview","year":"1999"},{"key":"e_1_2_8_4_1","volume-title":"Radio Broadcasting System, Digital Audio Broadcasting (DAB) to Mobile, Portable, and Fixed Receivers"},{"key":"e_1_2_8_5_1","volume-title":"Digital Broadcasting System Television, Sound, and Data Services; Framing Structure, Channel Coding, and Modulation Digital Terrestrial Television","year":"1996"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1109\/35.350382"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1109\/26.701317"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/ett.1461"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2002.1011210"},{"key":"e_1_2_8_10_1","unstructured":"ZhangR.Blind OFDM channel estimation through linear precoding: A subspace approach. 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