D. Ansorregui, B. Mouhouche, Youngho Oh, Hakju Lee
{"title":"基于混合Zadoff - Chu导频的广播OFDM系统联合检测与信道估计","authors":"D. Ansorregui, B. Mouhouche, Youngho Oh, Hakju Lee","doi":"10.1109/ICCSPA.2015.7081325","DOIUrl":null,"url":null,"abstract":"In this paper we propose a hybrid Zadoff-Chu (ZC) based pilot sequence suitable for OFDM broadcast systems. While maintaining the same scattered pilot structure and the same power level as in DVB-T2, we replace the phase values by a ZC combined sequence. This combined sequence can either carry information bits through a repetition of small ZC patterns, or serve just as a very robust fine time domain synchronization mechanism. We present the design methodology for different OFDM systems, the possible ZC patterns sequences valid for signaling and provide a recommended structure for DVB-T2 like systems. Simulation results show that, without degrading the pilot channel estimation, an additional time domain synchronization more robust than P1 of DVB-T2 is achieved in each OFDM symbol. The proposed structure can be used as a design basis for future broadcast systems to build on, where a separate preamble will no longer be needed, thus, reducing the frame overhead.","PeriodicalId":395644,"journal":{"name":"2015 International Conference on Communications, Signal Processing, and their Applications (ICCSPA'15)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Joint detection and channel estimation for broadcast OFDM systems using hybrid Zadoff Chu pilots\",\"authors\":\"D. Ansorregui, B. Mouhouche, Youngho Oh, Hakju Lee\",\"doi\":\"10.1109/ICCSPA.2015.7081325\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper we propose a hybrid Zadoff-Chu (ZC) based pilot sequence suitable for OFDM broadcast systems. While maintaining the same scattered pilot structure and the same power level as in DVB-T2, we replace the phase values by a ZC combined sequence. This combined sequence can either carry information bits through a repetition of small ZC patterns, or serve just as a very robust fine time domain synchronization mechanism. We present the design methodology for different OFDM systems, the possible ZC patterns sequences valid for signaling and provide a recommended structure for DVB-T2 like systems. Simulation results show that, without degrading the pilot channel estimation, an additional time domain synchronization more robust than P1 of DVB-T2 is achieved in each OFDM symbol. The proposed structure can be used as a design basis for future broadcast systems to build on, where a separate preamble will no longer be needed, thus, reducing the frame overhead.\",\"PeriodicalId\":395644,\"journal\":{\"name\":\"2015 International Conference on Communications, Signal Processing, and their Applications (ICCSPA'15)\",\"volume\":\"41 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2015 International Conference on Communications, Signal Processing, and their Applications (ICCSPA'15)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICCSPA.2015.7081325\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 International Conference on Communications, Signal Processing, and their Applications (ICCSPA'15)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCSPA.2015.7081325","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Joint detection and channel estimation for broadcast OFDM systems using hybrid Zadoff Chu pilots
In this paper we propose a hybrid Zadoff-Chu (ZC) based pilot sequence suitable for OFDM broadcast systems. While maintaining the same scattered pilot structure and the same power level as in DVB-T2, we replace the phase values by a ZC combined sequence. This combined sequence can either carry information bits through a repetition of small ZC patterns, or serve just as a very robust fine time domain synchronization mechanism. We present the design methodology for different OFDM systems, the possible ZC patterns sequences valid for signaling and provide a recommended structure for DVB-T2 like systems. Simulation results show that, without degrading the pilot channel estimation, an additional time domain synchronization more robust than P1 of DVB-T2 is achieved in each OFDM symbol. The proposed structure can be used as a design basis for future broadcast systems to build on, where a separate preamble will no longer be needed, thus, reducing the frame overhead.