Experimental Studies and Simulations Based Prediction of a Better Mimo-Ofdm Combined System for Broadband Wireless Mobile Communication

Sinha, Nirmalendu Bikas; Kandar, D.; Bera, Rabindra Nath; Sarkar, Subir Kumar

doi:10.2528/pierc08022809

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…Filtered multitone is viewed as a generalization of orthogonal frequency division multiplexing (OFDM) [3]. The OFDM system stains the orthogonality of different subcarriers by deploying rectangular time domain filters [4][5][6][7]. In OFDM systems, the transmitted signal is consisted of many symbols, each starts with a cyclic prefix (CP).…”

Section: Introductionmentioning

confidence: 99%

Effect of carrier frequency offset and symbol timing offset on the performance of FMT over time‐frequency selective channels

Zheng

Wang

2012

Trans. Emerging Tel. Tech.

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This paper presents the effects of carrier frequency offset (CFO) and symbol timing offset (STO) in filtered multitone (FMT) systems over time and frequency selective multipath fading channels. The analysis is based on an FMT system using a square-root raised cosine pulse. The performance of FMT systems in the presence of CFO and STO over different fading channels are derived and compared with that of orthogonal frequency division multiplexing systems. The offsets degrade the performance of the FMT systems because they cause filter mismatch. The CFO changes the amplitude frequency characteristic of the receiver filter, while the STO changes the phase frequency characteristic of the receiver filter. The simulations are conducted over different fading channels. To achieve signal-to-interference ratio above 20 dB, over a flat static channel, the frequency offset relative to symbol duration must be less than 5% in the orthogonal frequency division multiplexing system, while the upper limit is 8% in the FMT system. The simulation results also show that the FMT system is less sensitive to CFO in time frequency selective channels. The signal-to-interference ratio expressions help predict the bit-error-rate performance of FMT with single tap subchannel equalization. The analysis also helps synchronization algorithm design after analyzing the synchronization offset effect in FMT systems under certain channel conditions.

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Section: Introductionmentioning

confidence: 99%

Effect of carrier frequency offset and symbol timing offset on the performance of FMT over time‐frequency selective channels

Zheng

Wang

2012

Trans. Emerging Tel. Tech.

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“…It is well-known that the application of multi-antenna, or multipleinput multiple-output (MIMO) technology in wireless communications has received considerable attention for many years, since it can increase the spectrum and energy efficiencies through transmit-receive beamforming (BF), and/or achieve high data rates through spatial diversity [1][2][3][4][5][6][7]. More recently, due to the ability of increasing the capacity, reliability and coverage of wireless networks with a given power or bandwidth, cooperative transmission such as relay technology [8][9][10] and network coding [11,12] has become an active research topic in various wireless systems (see, e.g., [8] and the references therein).…”

Section: Introductionmentioning

confidence: 99%

Effect of Beamforming on Multi-Antenna Two Hop Asymmetric Fading Channels With Fixed Gain Relays

Lin¹,

An²,

Ouyang³

et al. 2013

PIER

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Abstract-In this paper, we investigate the impact of beamforming (BF) on a multi-antenna two hop amplify-and-forward (AF) fixed gain relay network over Rician-Rayleigh and Rayleigh-Rician asymmetric fading channels, respectively. The network consists of a relay with single antenna used to assist the signal transmission from the source to the destination, both of which are equipped with multiple antennas. By using the channel state information (CSI), the maximal output signal-to-noise ratio (SNR) with optimal beamforming is first obtained. Then, the novel analytical expressions for the outage probability (OP), probability density function (PDF) and generalized moments of the maximal output SNR are derived. Moreover, the theoretical formulas of the Ergodic capacity and average symbol error rates (ASERs) with various modulation formats are also developed. To gain further insights, the asymptotic ASERs at high SNR are presented to reveal the diversity order and array gain of the multi-antenna relay network. Finally, computer simulations confirm the validity of the theoretical analysis and indicate the influence of antenna number and Rican factor on the system performance.

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Hybrid Technology Providing Concurrent Vehicular Safety and Communication

Sinha¹,

Bera²,

Mitra³

2009

PIER C

Self Cite

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Experimental Studies and Simulations Based Prediction of a Better Mimo-Ofdm Combined System for Broadband Wireless Mobile Communication

Cited by 3 publications

References 25 publications

Effect of carrier frequency offset and symbol timing offset on the performance of FMT over time‐frequency selective channels

Effect of carrier frequency offset and symbol timing offset on the performance of FMT over time‐frequency selective channels

Effect of Beamforming on Multi-Antenna Two Hop Asymmetric Fading Channels With Fixed Gain Relays

Hybrid Technology Providing Concurrent Vehicular Safety and Communication

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