A method to partially suppress ISI and MAI for DS SS CDMA wireless networks

Wysocki, Beata J.; Wysocki, Tadeusz A.

doi:10.1109/icc.1997.610009

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Later, we proposed in [5] a base-band equivalent of the method. It follows from the fact that for the real spreading code g i ( t ) , equation (I) can be rewritten in the exponential form as:…”

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confidence: 99%

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DS CDMA scheme for WATM LAN with error control

Wysocki¹,

Wysocki²,

Zepernick³

IEEE GLOBECOM 1998 (Cat. NO. 98CH36250)

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In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on WalshRademacber functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of crosscorrelation between any pair of the channels is shown.The resultant system BER as well as the dishibution of errors within WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme, capable of correcting 10 errors, the number of WATM cells which would require retransmission is in the order of 0.6%.

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confidence: 99%

“…In [4] and [5] we have proposed the method to reduce the IS1 and MAI for DS CDMA wireless networks, and in [6], we optimized the scheme for the system using 13 spreading signatures based on the 16-bit Walsb-Rademacher functions. This paper deals with further design of DS CDMA WATM LAN where an error control mechanism is employed.…”

Section: Introductionmentioning

confidence: 99%

DS CDMA scheme for WATM LAN with error control

Wysocki¹,

Wysocki²,

Zepernick³

IEEE GLOBECOM 1998 (Cat. NO. 98CH36250)

Self Cite

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show abstract

“…In [3], we have described the method to reduce IS1 and MA1 for non-synchronized CDMA signals by means of a modification to the carrier waveform. The modified carrier has been obtained by a regular distortion to the frequency of the original carrier, resulting in the ith user line signal si( t ) expressed by:…”

Section: Design Methodsmentioning

confidence: 99%

“…In [3], we have proposed the method to reduce the IS1 and MA1 for DS CDMA wireless networks, and in this paper, we consider application of this method to derive the spreading signatures based on the 16-bits WalshRademacher functions [4] for the DS CDMA ATM WLAN.…”

Section: Introductionmentioning

confidence: 99%