The objective of this work is to enhance the knowledge about channel estimation and to compare the existing channel estimation techniques . Normally the received signal is corrupted by the channel i.e. Multipath, ISI. The estimation of a time-varying multipath fading channel is a difficult task for the receiver. In this work following estimation algorithms are studied viz. LMS, RLS, MMSE, LS, E...

In this paper, we develop a statistical geometric propagation model for a macrocell mobile environment that provides the statistics of angle-of-arrival (AOA) of the multipath components, which are required to test adaptive array algorithms for cellular applications. This channel model assumes that each multipath component of the propagating signal undergoes only one bounce traveling from the tr...

We propose new detectors for direct-sequence code-division multiple-access (CDMA) signals that outperform known approaches in rapidly fading multipath channels. Multipath compensation in CDMA systems is a problem of significant complexity especially when rapidly fading is afflicting the radio frequency channel. In this work, we depart from typical approaches in search of new kernels that can mo...

The mobile wireless channel a ords inherent diversity to combat the e ects of fading. Existing code division multiple access (CDMA) systems, by virtue of spread-spectrum signaling and RAKE reception, exploit only part of the channel diversity via multipath combination. Moreover, their performance degrades under fast fading commonly encountered in mobile scenarios. In this paper, we develop new ...

The ability to simulate various mobile radio channel impairments, particularly, multipath fading, in the products design phase, before equalizer algorithms have been implemented as custom ASICs, is critical. This paper presents the test procedure, developed for type-approval testing of a multipath fading simulator, as well as corresponding practical measurement results in terms of spurious sign...

With equipping multiple antennas at both transmitter and receiver ends, the signals in the wireless OFDM systems could be transmitted over multipath fading channels for achieving benefits and high flexibility. In this paper, we focus on MIMO-OFDM systems that simultaneously perform channel estimation in order to combat additive noise, and multipath fading. The performance improvement is confirm...

This study attempts to develop a time-scale deconvolution filter for optimal signal reconstruction of nonstationary processes with a stationary increment transmitted through a multipath fading and colored noisy channel with stochastic tap coefficients. A deconvolution filter based on wavelet analysis/synthesis filter bank is proposed to solve this problem via a three-stage filter bank. A fracta...

Thomas Eng, A. Chockalingam, Member, IEEE, and Laurence B. Milstein, Fellow, IEEE Abstract— The effect of phase noise on the capacities of coherently demodulated hybrid FDMA/CDMA systems operating over a multipath Rayleigh fading channel is investigated. Using an approximate upper bound on the BER performance which has been derived and presented in a previous paper, the capacities of the FDMA/C...