Abstract
A possible way to integrate variable bit rate (VBR) services into conventional synchronous direct-sequence, code-division multiple access (DS/CDMA) systems is to assign a number of unique codes (multiple codes) to a given service which can be used whenever its bit rate exceeds the available channel bandwidth. This has the disadvantage, that the number of available spreading codes is reduced. Instead, an asynchronous system can be applied by assigning a common code to all users. However, occasional bit-synchronism in an asynchronous system will cause an unacceptable bit error rate (BER). Therefore a hybrid-code DS/CDMA system is proposed, where common-codes are used only for mobile stations (MS) with VBR services. A self-control mechanism is applied to guarantee bit-asynchronism between the bits spread by the same code. In order to optimize the coding of video and voice sources, it is necessary to know the statistical characteristics of bit and packet errors. Simulation-based mobile network traffic models for integrated VBR video, interactive PCM coded speech and bulk transfer of data have been examined to obtain the BER performance of the system. Various channel models have been applied to macrocellular mobile networks. A conventional correlation receiver (single user detector: SUD) and a multi-user interference rejecting receiver are studied for the BS.
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References
M. J. McTiffin et al., “Mobile access to an ATM network using a CDMA air interface,” IEEE J Select. Areas Commun., vol. 12, no. 5, pp. 900–908, June 1994
B. Maglaris et al., “Performance models of statistical multiplexing in packet video communications,” IEEE Trans. Commun., vol. 36, pp. 834–843, July 1988
J. Bitó et al., “A simple model for the loss process in the cell stream of variable bit rate video sources,” VISICOM’93, 5th Intern. Workshop on Packet Video, Proc., pp. C4.1-C4. 6, Berlin, March 1993
N. D. Wilson et al., “Packet CDMA versus dynamic TDMA for multiple access in an integrated voice/data PCN,” IEEE J. Select. Areas Commun., vol. 11, no. 6, pp. 870–884, Aug. 1993
A. Baier et al., “Design study for a CDMA-based third-generation mobile radio system,” IEEE J. Select. Areas Commun., vol. 12, no. 4, pp. 733–743, May 1994
D.-I. Kim et al., “Counting collision free transitions in common-code SSMA communications,” IEEE Trans. Commun., vol. 43, pp. 593–601, Feb./March/Apr. 1995
J. G. Proakis, “Digital communications”, 3rd edition, New York, McGraw-Hill, 1995
S. L. Miller, “An adaptive direct-sequence code-division multiple-access receiver for multiuser interference rejection,” IEEE Trans. Commun., vol. 43, pp. 1746–1755, Feb./March/Apr. 1995
R. Lupas et al., “Linear multiuser detectors for synchronous code-division multiple-access channels,” IEEE Trans. on Inform. Theory, vol. 35, pp. 123–136, Jan. 1989
M. Varanasi et al., “Multistage detection in asynchronous code-division multiple-access communications,” IEEE Trans. on Comm., vol. 38, pp. 509–519, Apr. 1990
C. N. Pateros et al., ’interference suppression and multipath mitigation using an adaptive correlator direct sequence spread spectrum receiver,“ Proc. ICC, pp. 324.3.1–324. 3. 5, 1992
S. Haykin, “Adaptive filter theory”, 3rd edition, New Jersey, Prentice Hall, 1996
E. Del Re et al., “Code division multiple access schemes for terrestrial and satellite mobile communication networks: modeling and performance evaluation,” ETT, vol. 5, no. 6, pp. 725–737, Nov.-Dec. 1994
ETSIJTC GSM Recommendations, 05-Series, “Radio transmission and reception”
V. Fung et al., “Bit error simulation for it/4 DQPSK mobile radio communications using two-ray and measurement-based impulse response models,” IEEE J Select. Areas Commun., vol. 11, no. 3, pp. 393–405, Apr. 1993
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Bitó, J., Schulz, H., Noll, P. (1997). Simulation Study of Integrated Video, Voice, and Data Transmission in Hybrid-Code DS/CDMA Systems. In: Goodman, D.J., Raychaudhuri, D. (eds) Mobile Multimedia Communications. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0151-4_27
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DOI: https://doi.org/10.1007/978-1-4899-0151-4_27
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