Approximate equation of average bit-error rate in DS-CDMA systems over fading channels

Sasamori, Fumihito; Maehara, Fumiaki; Handa, Shiro; Oshita, Shinjiro; Takahata, Fumio

doi:10.1109/tcomm.2003.809790

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…We have investigated the effect of the time fluctuation caused by the Doppler frequency shift in the single- carrier systems with DBPSK [11], [12]. In this section, we will introduce a full detail of the extended statistical analysis including the frequency fluctuation caused by the delay spread, and then a few comments will be made on overlapping points.…”

Section: Statistical Analysis Of Ber Performancementioning

confidence: 99%

“…Due to the inter-carrier and intra-symbol interferences mentioned above, the BER expressed by (14) is more degraded. Here, the desired equation will be derived by introducing the Gaussian approximation [12], [15]. Concretely speaking, it is necessary to derive the carrier-to-noise plus interference power ratio (CNIR) which involves the interference power estimated as the Gaussian noise.…”

Section: Carrier-to-noise Plus Interference Power Ratiomentioning

confidence: 99%

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A Simple Method of BER Calculation in DPSK/OFDM Systems over Fading Channels

Sasamori¹

2005

IEICE Transactions on Fundamentals of Electronics, Communicatio

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In orthogonal frequency division multiplexing (OFDM) systems with differential phase shift keying (DPSK), it is possible to apply differential modulation either in the time or frequency domain depending on the condition of fading channels, such as the Doppler frequency shift and the delay spread. This paper proposes a simple calculation method, that is, an approximate closed-form equation of the bit error rate (BER) in DPSK/OFDM systems mentioned above over both time and frequency selective Rician fading channels. The validity of the proposed method is demonstrated by the fact that the BER performances given by the derived equation coincide with those by Monte Carlo simulation.

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Section: Statistical Analysis Of Ber Performancementioning

confidence: 99%

Section: Carrier-to-noise Plus Interference Power Ratiomentioning

confidence: 99%

A Simple Method of BER Calculation in DPSK/OFDM Systems over Fading Channels

Sasamori¹

2005

IEICE Transactions on Fundamentals of Electronics, Communicatio

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“…The QAM systems investigated include maximal ratio combining (MRC) MQAM [27], [28] and 16 STAR-QAM [29]. The DS-CDMA systems considered in [30][31][32][33][34][35] employed BPSK or/and DPSK modulation schemes. MC systems in which BER expressions in Rician fading were derived include those where the schemes of modulation are MDPSK [36], MFSK [37] and DPSK [38].…”

Section: Bpsk Performance Analysis For Rician Fadingmentioning

confidence: 99%

Performance analysis of digital communication systems in two-wave with diffuse power fading

Oh¹

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The received signal strength at a mobile wireless receiver as it moves over a small, local area is subjected to severe and rapid fluctuation. This rapid fluctuation in signal strength arises mainly due to multipath propagation in the immediate vicinity of the receiver. A proper characterization of this small-scale or fast fading is therefore necessary when investigating the performance of a receiver in the presence of noise and interference. The fading probability density function (pdf), which represents the probability density of the amplitude of the received signal, should be carefully chosen so that the system analysis gives accurate prediction of the bit-error rate (BER) or symbol-error rate (SER) performance. Rayleigh and Rician pdfs are commonly used to characterize small-scale fading, but experimental measurements of local fading signal amplitudes have sometimes shown that either one of these two pdfs is not adequate in this respect. The two-wave with diffuse power (TWDP) fading pdf, recently introduced with the aim to complement the above classical pdfs, characterizes the physical situation where there are two specular (dominant) waves in the presence of other diffuse components. The use of the TWDP pdf to characterize small-scale fading has the advantage that it has, as its special cases, the Rayleigh and Rician pdfs. Hence, BER and SER expressions derived for TWDP fading will encompass the corresponding expressions for Rayleigh and Rician fading. An initial study of the properties of the TWDP pdf suggests that it can produce a link poorer than that of Rayleigh fading. This is a significant claim, which needs to be investigated further, as Rayleigh fading is often used as the "worst-case" situation in the design of communication systems. This thesis details further investigations of TWDP fading, which include analyses of BER performance results of binary PSK, DPSK and FSK systems in TWDP fading. The

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Performance evaluation of multiple-antenna DS-CDMA wireless communication systems with different diversity combining methods

Mondal

Hossain²

2009

2009 Australasian Telecommunication Networks and Applications Conference (ATNAC)

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Approximate equation of average bit-error rate in DS-CDMA systems over fading channels

Cited by 7 publications

References 3 publications

A Simple Method of BER Calculation in DPSK/OFDM Systems over Fading Channels

A Simple Method of BER Calculation in DPSK/OFDM Systems over Fading Channels

Performance analysis of digital communication systems in two-wave with diffuse power fading

Performance evaluation of multiple-antenna DS-CDMA wireless communication systems with different diversity combining methods

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