Filter Bank Based Frequency Domain Equalizer in Single Carrier Modulation
نویسندگان
چکیده
This paper is concerned with the use of complexmodulated oversampled filter bank for frequency domain equalization in single carrier systems. A novel equalizer structure consisting of a low order linear phase FIR and an all-pass filter is applied in subband-wise compensation of channel amplitude and phase distortions separately. The performance of the proposed filter bank based frequency domain equalizer is studied and compared against a fractionally spaced FFT-based equalizer. It is demonstrated that a filter bank based equalizer system with modest number of subbands and without guard-interval overhead is able to provide similar or better performance than an cyclicprefix and FFT-based equalizer.
منابع مشابه
Frequency-Domain Equalization in Single-Carrier Transmission: Filter Bank Approach
This paper investigates the use of complex-modulated oversampled filter banks (FBs) for frequency-domain equalization (FDE) in single-carrier systems. The key aspect is mildly frequency-selective subband processing instead of a simple complex gain factor per subband. Two alternative low-complexity linear equalizer structures with MSE criterion are considered for subband-wise equalization: a com...
متن کاملInter Carrier Interference mitigation in OFDM system using Kalman Filter Channel Estimation
Orthogonal frequency division multiplexing (OFDM) is one of the modulation scheme, used for high speed mobile communication. However, fast time varying multipath channels leads to loss of orthogonality of subcarriers and introduces inter carrier interference (ICI). In this study, MMSE equalizer is implemented to remove ICI. The information of Channel Impulse Response (CIR) required for equalize...
متن کاملLMS-based Equalization in Filter Bank Multicarrier Wireless Communication Systems
Multicarrier systems give many attractive characteristics for high data rates wireless communications. Filter bank multicarrier systems (FBMC) provide some advantages more than the traditional orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP). The most obvious difference between the two techniques is in frequency selectivity. In this paper, we will design adaptive channe...
متن کاملEFFICIENT NON−UNIFORM FILTER−BANK EQUALIZER (WedAmPO2)
An efficient realization of a low delay filter−bank will be proposed, which can be regarded as a filter−bank used as equalizer with either fixed or time−varying spectral gain factors. The proposed filter−bank equalizer (FBE) results in a time−domain filter whose coefficients are adapted in the (short−term) spectral−domain. Perfect signal reconstruction is obtained for a broad class of spectral ...
متن کاملInterference Suppression Technique using Edge-removal Filter, Nulling Filter and Turbo Equalizer for Single Carrier Based Broadband Wireless Transmission
This paper proposes an interference suppression technique using edge-removal filter in the transmitter, as well as, nulling filter and turbo equalizer in the receiver for carrier interferometry (CI) based one-cell reuse single-carrier time division multiple access (TDMA) systems. In the proposed system, the desired signals in the reference cell are interfered by interference including adjacent-...
متن کامل