BER performance analysis of a direct conversion receiver

Lindoff, Bengt; Malm, Peter

doi:10.1109/tcomm.2002.1006566

Cited by 32 publications

(16 citation statements)

References 9 publications

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“…7 and 8 also compare the BEP characteristics among the proposed schemes and the conventional TSA-LPSK scheme [13]. In the TSA-LPSK scheme, the symbol stream is transmitted in blocks, each block consisting of a sequence of N training symbols followed by a sequence of N (1/R − 1) LPSK data symbols.…”

Section: A) Bep Analysis On Block Detection Schemementioning

confidence: 99%

“…An iterative detection scheme is also modified from the block detection scheme to simplify the realization complexity. Both block and iterative schemes are shown to outperform the conventional TSA scheme in [13]. Section V concludes the paper.…”

mentioning

confidence: 91%

“…Most of approaches in this stream are to estimate and then compensate for the DC offset by virtue of adaptive filtering or least square approaches [10]- [14]. In particular, the training-sequence-aided (TSA) approaches in [13]- [14], which estimate DC offset and channel response in the prefix training sequence and then make data detection with the aid of the estimates in the suffix data sequence, are shown to provide satisfactory error performance in various fading environments. Since training sequences are used, loss in both spectral and power efficiencies results.…”

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confidence: 99%

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Noncoherent block detection in the presence of DC offset

Chung¹

2006

IEEE Trans. Wireless Commun.

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Abstract-In this paper, we deal with noncoherent detection of a digitally phasor block-modulated signal in the additive white Gaussian noise channel when a direct-current (DC) offset is present in the receiver baseband processing. By processing the received baseband signal block by block, a generalized linear transform is used to remove the offset prior to data detection, thereby releasing the succeeding detection process from the threat of DC offset. Operating on transform output blocks, a generalized maximum-likelihood scheme is developed for noncoherent data detection without a priori knowledge of channel amplitude and phase. When all the signaling blocks are confined within the space expanded by the basis vectors obtained from the offset-removal transform matrix, the proposed detection scheme can exploit the advantage of performing data detection and estimation on channel amplitude and phase jointly in the maximum-likelihood sense. It is analytically shown that the block detection scheme provides the bit error performance asymptotically approaching that of the corresponding ideal coherent phase-shift-keyed (PSK) detection in the absence of DC offset when the block length is increased. An iterative detection scheme is also modified from the block detection scheme to simplify the realization complexity. Both block and iterative detection schemes are shown to outperform the conventional training-sequence-aided PSK detection scheme under the same transmission throughput efficiency.Index Terms-DC offset, block modulation, noncoherent block detection, iterative detection.

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Section: A) Bep Analysis On Block Detection Schemementioning

confidence: 99%

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confidence: 91%

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confidence: 99%

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Noncoherent block detection in the presence of DC offset

Chung¹

2006

IEEE Trans. Wireless Commun.

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“…한편, DCR(direct conversion receiver) 구조는 저 전력 특 성과 높은 집적도를 가지며, 대량 생산이 수월한 장점을 가지고 있다 [6]～ [8] . 이러한 DCR 구조의 장점은 차세대 무 선 통신 기기의 전력 소모와 부피를 줄일 수 있어 DCR 구조에 대한 관심히 매우 높아지고 있다.…”

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Design and Performance Evaluation of In-Band Full-Duplex System Based on Direct Conversion Receiver

Keum¹,

An²,

Ryu³

2014

The Journal of Korean Institute of Electromagnetic Engineering

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In this paper, we propose and design IBFD system based on DCR. And then, we analyze effect of DC offset by self-interference in the proposed system. Also, we evaluate BER performance of the proposed system according to DC offset. As a result of the simulation, we can confirm that when the self-interference is not completely cancelled by the RF cancellation, linearity of desired signal and self-interference is distorted by DC offset. Also, in the proposed system using m-QAM modulation, DC offsets of multi-level are caused by self-interference with m-QAM modulation. As a result, constellations of desired signal and self-interference are greatly distorted. In contrast, in the proposed system using m-PSK modulation, DC offset of single level is caused by self-interference with m-PSK modulation. In this condition, we confirm that distortion of constellations of desired signal and self-interference is less than when using m-QAM modulation. That is, we can confirm that m-PSK modulation is effective than m-QAM modulation in DCR based IBFD system. Also, we can confirm that it is important to cancel self-interference as much as possible in RF-stage.

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“…The analysis of bit error rate (BER) performance in a direct-conversion receiver with different levels of dc offset for time-division multiple-access (TDMA)-based single-carrier communication systems was investigated in [5]- [7]. In [5], three principal impairments of analog circuits, named gain imbalance, phase imbalance, and dc offset, were considered, and the resulting performance losses in terms of BER and out-of-band power were quantitatively assessed.…”

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Analysis and Compensation of DC Offset in OFDM Systems Over Frequency-Selective Rayleigh Fading Channels

Yih

2009

IEEE Trans. Veh. Technol.

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Abstract-Direct-conversion receivers have become popular in radio-frequency (RF) circuit design for their advantages of low cost, low power consumption, and fewer chip components over other architectures such as heterodyne receivers. However, the direct-conversion receiver architecture often suffers from direct current (dc) offset, which is a consequence of the imperfect direct-conversion process. In this paper, we study the effects of dc offset on the symbol error rate (SER) performance of orthogonal frequency-division multiplexing (OFDM) systems in multipath Rayleigh fading channels. Since OFDM system performance is sensitive to carrier frequency offset (CFO), the CFO must be estimated and compensated at the receiver. Due to CFO compensation, the dc offset caused by direct-conversion receivers and/or mixed-signal circuits no longer only affects the dc subcarrier and is spread over all subcarriers. By deriving the analytical SER formulas for OFDM systems with various modulation formats, the dependency of SER on dc offset and CFO is clearly quantified. These SER formulas can help system designers determine suitable specifications of RF components and understand whether digital dc offset compensation is necessary or not. Finally, we propose and analyze a simple dc offset estimation and cancellation scheme under the assumption that dc offset holds constant in one OFDM symbol duration. Numerical results demonstrate the effectiveness of the proposed dc offset-cancellation scheme.Index Terms-Carrier frequency offset (CFO), direct current (dc) offset, interference cancellation, orthogonal frequencydivision multiplexing (OFDM), performance analysis, Rayleigh fading, symbol error rate (SER).

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BER performance analysis of a direct conversion receiver

Cited by 32 publications

References 9 publications

Noncoherent block detection in the presence of DC offset

Noncoherent block detection in the presence of DC offset

Design and Performance Evaluation of In-Band Full-Duplex System Based on Direct Conversion Receiver

Analysis and Compensation of DC Offset in OFDM Systems Over Frequency-Selective Rayleigh Fading Channels

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