The performance of long-haul coherent optical fiber transmission system is significantly affected by the equalization enhanced phase noise (EEPN), due to the interaction between the electronic dispersion compensation (EDC) and the laser phase noise. In this paper, we present a comprehensive study on different chromatic dispersion (CD) compensation and carrier phase recovery (CPR) approaches, in...

Discrete wavelet multitone (DWMT) modulation is a wavelet transform based technique implemented using perfect reconstruction filter banks. It has been recently proposed for various wireline channels such as digital subscriber loops (DSLs) as a solution to the problems posed by a discrete multitone (DMT) transceiver including interblock interference (IBI) and lower spectral efficiency due to the...

It is well-known that, in DS-CDMA downlink signal transmission, frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace rake combining to achieve much improved bit error rate (BER) performance in severe frequencyselective fading channel. However, in uplink signal transmission, as each user’s signal goes through a different channel, a severe multi-user...

Frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace rake combining with much improved bit error rate (BER) performance of the multi-code direct sequence spread spectrum (DSSS) signal transmission in a severe frequency-selective fading channel. However, since the channel cannot be completely equalized, the residual inter-code interference (ICI) is ...

Their programmability means that digital pre-equalization techniques are more flexible than analog circuit equalizers. However, their performance depends on the number of samples per data symbol needed to accurately represent pre-equalized time domain pulse. This requirement limits maximum rate can be generated by a digital-to-analog converter (DAC). Another challenge when pre-equalizing signal...

The bit error rate (BER) performance of single-carrier (SC) block transmission in a frequency-selective fading channel can be significantly improved by the use of frequency-domain equalization (FDE). However, in multi-cell environment, the BER performance is degraded due to co-channel interference. Adaptive antenna array (AAA) is effective to suppress the cochannel interference. In this paper, ...

The presented paper considers the uplink transmission in base station (BS) cooperation schemes where mobile terminals (MTs) in adjacent cells share the same physical channel. We consider single-carrier with frequency-domain equalization (SC-FDE) combined with iterative frequency-domain receivers based on the iterative block decision feedback equalization (IB-DFE). We study the quantization requ...

Abstract Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion has been attracting much attention to improve the bit error rate (BER) performance of DS-CDMA by obtaining the frequency diversity gain. In the uplink case, however, since MMSE-FDE cannot transform the channel into a frequency-flat channel, multi-access interference (MAI) (or called multi-user i...

Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can significantly improve the BER performance of DSand MC-CDMA systems in a severe frequencyselective fading channel. However, since the frequency-distorted signal cannot be completely equalized, the residual inter-code interference (ICI) limits the BER performance improvement. 4G systems must support mu...