A Method for Synthesis of CAZAC Sequences with Period

نویسنده

  • Ivo Michailov Michailov
چکیده

A key role for the present wireless communications play families of signals with ideal periodic autocorrelation known as Constant Amplitude Zero Autocorrelation Code (CAZAC) sequences. They find many applications for synchronization, channel estimation, elimination of the negative effects, caused by the multipath spread of the electromagnetic waves, data protection and others. With regard in this paper we present a new method for synthesis of CAZAC sequences with small signal constellation. The method is based on a modification of the signal constellation of the classical maximal length sequences with period 7-1. The proposed method can be successfully used in the process of development of perspective wireless communication system, exploiting very effectively the limited natural resource – the electromagnetic spectra. Keywordsphase manipulated signals, synthesis of signals with ideal periodic autocorrelation function, crosscorrelation function

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Role of the Ambiguity Function in Waveform Design and Phase coded Waveforms

CAZAC (Constant Amplitude Zero Auto-Correlation) sequences are important in waveform design because of their optimal transmission efficiency and tight time localization properties. Certain classes of CAZAC sequences have been used in radar processing for many years, while recently discovered sequences invite further study. This paper compares different classes of CAZAC sequences with respect to...

متن کامل

A Novel Compact Preamble Structure for Timing Synchronization in MIMO- OFDM Systems Using CAZAC Sequences

To increase the throughput of transmission systems, MIMO-OFDM technology allows for a better reach and rate of transmission and improves the reception. The synchronization between the transmitter and the receiver has become a big challenge. A bad timing synchronization causes the loss of a lot of information in a MIMO-OFDM system. In this paper, we propose a novel compact preamble structure bas...

متن کامل

Design of Modified Timing Offset Estimation in OFDM for Maintaining Orthogonality

This paper deal with the symbol timing issue of an OFDM system in fast varying channel. Symbol timing offset (STO) estimation is a major task in OFDM. Most of existing methods for estimating STO used cyclic prefix or training sequences. In this paper, we consider a new system for STO estimation using constant amplitude zero auto-correlation (CAZAC) sequences as pilot sequences in conjunction wi...

متن کامل

A Joint Timing Offset and Channel Estimation Using Fractional Fourier Transform and Cazac Sequences

This paper deals with symbol timing offset and channel estimation in OFDM (orthogonal frequency division multiplexing) system in fast varying channel. Symbol timing offset (STO) estimation is a major task in OFDM. Most of existing methods for estimating STO used cyclic prefix or training sequences. In this paper, we consider a new system for STO estimation using constant amplitude zero autocorr...

متن کامل

The Design of the Best Heat Integrated Separation Systems Using Harmony Search Algorithm

The synthesis of heat integrated multi-component distillation systems is complex due to its huge search space for structural combination and optimization computation. To provide a systematic approach and tools for the synthesis design of distillation systems, a new method for modeling heat integrated columns is presented, and the operating cost objective function is minimized by improved harmon...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013