[PDF] Top 20 Channel Estimation and Optimal Power Allocation for a Multiple Antenna OFDM System

... of OFDM is allowing transmission over a frequency-selective fading channel using a low cost ...of antenna arrays at both receiver and transmit- ter side can significantly increase the bandwidth ... See full document

... a system such as reference signal (RS) of 3GPP LTE and that relays know the used power for transmission of a ...For channel estimation, various schemes can be concerned ...other power ... See full document

... Using Multiple Antenna (MA), one can achieve high-data-rate over wireless multipath ...The Multiple Input Multiple Output (MIMO) technology enhances the data rate without any additional ... See full document

... Detection algorithms like zero forcing (ZF), maximum likelihood detection (MLD) and minimum mean square estimation (MMSE) applicable to MIMO can be applied for MIMO-OFDM as well with slight changes in the ... See full document

... sub-carrier power allocation face the problems of complex iterative calculation and difficult ...exponential power distribution function and derive a sub-optimal power allocation ... See full document

... a channel that is multi user Gaussian ...optimized channel and proved this scheme is indeed optimal multi-user zero forcing pre- coding under total sum of power ... See full document

... MIMO-OFDM system are encoders’ complexity, high peak-to-average power ratio (PAPR), antennas design, equalization, channel estimation and so ...linear power amplifiers to evade ... See full document

... new power allocation problem for OFDM systems with two cooperative transmitters, where each transmitter has an individual power constraint and can obtain their own perfect channel state ... See full document

... Coded OFDM is a transmission technique that is used in many practical communication ...coded OFDM system, source data are coded, interleaved and multiplexed for transmission over many frequency ... See full document

... Joint Channel Esti- mation and multi-user detection (GA-JCEMUD) approach for multi-user MIMO SDMA-OFDM systems, which provides an effective solution to the multi-user MIMO channel estimation ... See full document

... It is shown that chirp based training sequences can yield the optimum performance and such sequences are proposed for ST-based MIMO-OFDM systems. The sequences are generalized to incorporate the use of guard ... See full document

... input multiple output- orthogonal frequency division multiplexing) technology, has gained great popularity for its capability of high rate transmission and its robustness against multi-path fading and other ... See full document

... Pilot-assisted channel estimation has been studied only in common cooperative AF (Amplify-and-Forward) OFDM which has no feedback ...AF-OFDM system, we propose a feedback technique in ... See full document

... (MU-MIMO) system where base stations equipped with multiple antennas serve multiple users ...random channel vectors for the different users are near orthogonal, this makes MU massive MIMO ... See full document

... ulation, channel coding and digital signal procession tech- ...Existing power lines, which are originally installed in the rooms for power supply are used for ...electrical power in frequency ... See full document

... 4 multiple-input multiple-output (MIMO) system can be ...MIMO- OFDM is implemented on the WARP module, where the MIMO technique is intended as a diversity technique to get power ... See full document

... sparse channel estimation can re- construct channel impulse response with less pilot sig- nals to solve the optimization problem, which are far fewer than those required by the sampling ...hance ... See full document

... on multiple carrier ...channels, power efficiency and multipath delay unfold ...in OFDM communication is the high peak-to-average power ratio ...the OFDM system, its impact and a ... See full document

... In communication systems, efficient use of the spectrum is an indispensable concern. Recently the use of compressed sensing for the purpose of estimating orthogonal frequency division multiplexing (OFDM) sparse ... See full document

... Division Multiple (OFDM) and MIMO to provide up to 100 Mbps for 2x2 MIMO systems ...[3]. OFDM is used to combat the effect of frequency selective fading and can improve the spectral efficiency of the ... See full document