A Low Complexity Frequency Domain Equalization for EDGE
نویسندگان
چکیده
In this paper, a new low-complexity frequency-domain based technique is proposed for channel equalization and symbol detection of an Enhanced Data Rate for GSM (EDGE) cellular system, which uses 8-PSK modulation. The proposed method exploits the guard interval and tail symbols present in the EDGE slot structure and uses the tail symbols as partial Cyclic Prefix in the frequency domain equalizer. The effect of the missing cyclic prefix is diminished by iterative reconstruction of the complete cyclic prefix. In the developed framework, the advantages of over-sampling and diversity reception are explored to improve the system performance with a minimal additional complexity. The performance of the proposed system is demonstrated by computer simulations. Also, the performance gain by exploiting over-sampling and receiver diversity is presented.
منابع مشابه
Single-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels
In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...
متن کاملFrequency domain equalization of DMT/OFDM systems with insufficient guard interval
In this paper, we propose a new, generalized approach for equalization of discrete multi-tone (DMT) systems, which not only uses redundancy in the time domain by adding a guard interval, but also takes advantage of existing or intentionally placed redundancy in the frequency domain. For this purpose, we replace the one tap frequency equalizer in the DMT receiver by a block equalizer and derive ...
متن کاملSCFDE for STBC Transmission over Frequency Selective Fading Channel
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract – In wireless communication, multipath propagation results in several fading effect. To equalize such long fading channel traditional single carrier time domain equalization becomes infeasible due to its large computational complexity. Single-carri...
متن کاملPre- and Post-Equalization and Frequency Diversity Combining Methods for Block Transmission with Cyclic Prefix
This paper proposes low-complexity preand postfrequency domain equalization and frequency diversity combining methods for block transmission schemes with cyclic prefix. In the proposed methods, the equalization and diversity combining are performed simultaneously in discrete frequency domain. The weights for the proposed equalizer and combiner are derived based on zero-forcing and minimummean-s...
متن کاملLow Complexity Frequency Domain Equalization of MIMO Channels with Applications to MIMO-CDMA Systems
CDMA and MIMO-CDMA systems using RAKE receivers are heavily limited by selfand multiple-accessinterference. Linear equalization is a means to remove this interference, however it is often not practical due to the enormous complexity, especially in the MIMO case. This paper presents an approach to greatly reduce the complexity of linear MIMO equalizers. It discusses the complexity reduction of t...
متن کامل