Improving bandwidth efficiency in E-band communication systems

Mehrpouyan, Hani; Khanzadi, M. Reza; Matthaiou, Michail; Sayeed, A.M.; Schober, Robert; Hua, Yingbo

doi:10.1109/mcom.2014.6766096

Cited by 50 publications

(44 citation statements)

References 12 publications

(35 reference statements)

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“…The QAM symbols are transmitted directly over the phase-noise channel (1) while an EKF at the receiver compensates the effect of phase noise before data detection. Note that the QAM symbols transmitted here have not been manipulated as in (4).…”

Section: Overview Of the Kalman Filter Methodsmentioning

confidence: 99%

Receiver Algorithm Based on Differential Signaling for SIMO Phase Noise Channels with Common and Separate Oscillator Configurations

Khanzadi

Krishnan

Eriksson

2015

2015 IEEE Global Communications Conference (GLOBECOM)

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Abstract-In this paper, a receiver algorithm consisting of differential transmission and a two-stage detection for a single-input multiple-output (SIMO) phase-noise channels is studied. Specifically, the phases of the QAM modulated data symbols are manipulated before transmission in order to make them more immune to the random rotational effects of phase noise. At the receiver, a twostage detector is implemented, which first detects the amplitude of the transmitted symbols from a nonlinear combination of the received signal amplitudes. Then in the second stage, the detector performs phase detection. The studied signaling method does not require transmission of any known symbols that act as pilots. Furthermore, no phase noise estimator (or a tracker) is needed at the receiver to compensate the effect of phase noise. This considerably reduces the complexity of the receiver structure. Moreover, it is observed that the studied algorithm can be used for the setups where a common local oscillator or separate independent oscillators drive the radio-frequency circuitries connected to each antenna. Due to the differential encoding/decoding of the phase, weighted averaging can be employed at a multi-antenna receiver, allowing for phase noise suppression to leverage the large number of antennas. Hence, we observe that the performance improves by increasing the number of antennas, especially in the separate oscillator case. Further increasing the number of receive antennas results in a performance error floor, which is a function of the quality of the oscillator at the transmitter.

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Section: Overview Of the Kalman Filter Methodsmentioning

confidence: 99%

Receiver Algorithm Based on Differential Signaling for SIMO Phase Noise Channels with Common and Separate Oscillator Configurations

Khanzadi

Krishnan

Eriksson

2015

2015 IEEE Global Communications Conference (GLOBECOM)

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“…This motivates system engineers to equip hardware with low PN high frequency oscillators to minimize frequency and phase drifts [16]. Wide-band systems require front-end components to operate at higher bandwidths resulting in increasing the phase perturbation introduced by entire communication system.…”

Section: B Impact Of Phase Noisementioning

confidence: 99%

Mm-Wave STSK-aided Single Carrier block transmission for broadband networking

Rahman

Habib

Sacchi

et al. 2017

2017 IEEE Symposium on Computers and Communications (ISCC)

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Abstract-Millimeter wave (mm-Wave) communications has been considered as a strong candidate for future wireless standards, due to the large available bandwidth in the order of gigahertz. As a result, a plethora of future services and application-oriented scenarios can be conceived, under suitable propagation conditions. Accurate physical (PHY) layer design plays a vital role in the deployment of robust transmission systems able to efficiently exploit the large bandwidth portions available in the mm-Wave frequencies. In this paper, we propose Space-Time Shift Keying (STSK) MIMO coding combined with Cyclic-Prefixed Single Carrier (CP-SC) block transmission for broadband data exchange over frequency-selective mm-Wave channels. STSK allows to exploit transmit and receive diversity with better performance when compared with state-of-the-art MIMO techniques only relying on receive diversity, such as, for example Spatial Modulation (SM). The performance of CP-SC-STSK and CP-SC-SM have been assessed in the presence of phase noise and imperfect channel estimation, considering 2 and 4 elements MIMO systems and LoS indoor vs. nLoS outdoor 73 GHz multipath channels. We show that the STSK-based solution using MMSE Frequency-Domain Equalization (FDE) is very robust against the aforementioned impairments and clearly outperforms CP-SC-SM at the price of a slight increase of receiver complexity and a throughput reduction of 50% when 4 × 4 MIMO systems are considered.

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“…For a high data-rate wireless link using QAM modulation, the transmitter linearity, LO phase noise and I/Q phase imbalance are highly important [16][17][18][19][20], since they impact the achievable BER. During the design of a MM-wave transmitter it is therefore of great value if the expected BER due to transmitter imperfections can be estimated.…”

Section: Error Vector Magnitude (Evm) In Transmittersmentioning

confidence: 99%

“…Early E-band transmitters used simple modulation schemes such as binary phase-shift keying (BPSK) or on-off keying (OOK) [1]. These modulation schemes do not require a high linearity transmitter but are on the other hand less spectral efficient [16]. In E-band systems of today, to support spectral efficient transmission with high data rates, M-ary QAM is used.…”

Section: Introductionmentioning

confidence: 99%

System simulations of a 1.5 V SiGe 81–86 GHz E-band transmitter

Tired

Sandrup

Nejdel

et al. 2016

Analog Integr Circ Sig Process

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This paper presents simulation results for a sliding-IF SiGe E-band transmitter circuit for the 81-86 GHz E-band. The circuit was designed in a SiGe process with f T = 200 GHz and uses a supply of 1.5 V. The low supply voltage eliminates the need for a dedicated transmitter voltage regulator. The carrier generation is based on a 28 GHz quadrature voltage oscillator (QVCO). Upconversion to 84 GHz is performed by first mixing with the QVCO signals, converting the signal from baseband to 28 GHz, and then mixing it with the 56 GHz QVCO second harmonic, present at the emitter nodes of the QVCO core devices. The second mixer is connected to a threestage power amplifier utilizing capacitive cross-coupling to increase the gain, providing a saturated output power of ?14 dBm with a 1 dB output compression point of ?11 dBm. E-band radio links using higher order modulation, e.g. 64 QAM, are sensitive to I/Q phase errors. The presented design is based on a 28 GHz QVCO, the lower frequency reducing the phase error due to mismatch in active and passive devices. The I/Q mismatch can be further reduced by adjusting varactors connected to each QVCO output. The analog performance of the transmitter is based on ADS Momentum models of all inductors and transformers, and layout parasitic extracted views of the active parts. For the simulations with a 16 QAM modulated baseband input signal, however, the Momentum models were replaced with lumped equivalent models to ease simulator convergence. Constellation diagrams and error vector magnitude (EVM) were calculated in MATLAB using data from transient simulations. The EVM dependency on QVCO phase noise, I/Q imbalance and PA compression has been analyzed. For an average output power of 7.5 dBm, the design achieves 7.2% EVM for a 16 QAM signal with 1 GHz bandwidth. The current consumption of the transmitter, including the PA, equals 131 mA from a 1.5 V supply.

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Improving bandwidth efficiency in E-band communication systems

Cited by 50 publications

References 12 publications

Receiver Algorithm Based on Differential Signaling for SIMO Phase Noise Channels with Common and Separate Oscillator Configurations

Receiver Algorithm Based on Differential Signaling for SIMO Phase Noise Channels with Common and Separate Oscillator Configurations

Mm-Wave STSK-aided Single Carrier block transmission for broadband networking

System simulations of a 1.5 V SiGe 81–86 GHz E-band transmitter

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