OPTIMIZING THE PERFORMANCE OF DIGITAL PULSE INTERVAL MODULATION WITH GUARD SLOTS FOR DIFFUSE INDOOR OPTICAL WIRELESS LINKS
34-39
15.Cnf-392 Paper View Page
Title
New Approach to Eliminate Capacity Limitation in CDMA
Authors
, , ,
Abstract
This paper proposes a new theory on the use of Scrambling Code (SC) by transmitters in a Code Division Multiple Access (CDMA) based communication. It also provides an overview on the implementation of this theory for a Wideband Code Division Multiple Access (WCDMA) based network, to eliminate the existing capacity limitation. Although this theory is applicable for all CDMA based systems, but for simplicity it has been applied to WCDMA in this paper in order to justify its statement, and to prove that its implementation can eliminate the current capacity limitation. The use of Scrambling Code (SC) enables different signal sources to be separable at the receiver. It’s justified in uplink for the Mobile Station (MS) to use its unique SC, as there are a number of MS transmitting to a common receiver of Base Station Cell (BS). But, it’s not justified for the BS to use its unique SC in downlink when it transmits user channel to a MS, which intentionally is not a common receiver for many BS. The MS is rather an unintentional receiver of signals from neighbouring BS. But, the existing scrambling technique actually treats the MS as an intentional common receiver of many BS transmitters. This puts a requirement on BS to identify itself in downlink user channels using its unique SC, thus limiting it to transmit only one set of CC. This paper questions the use of unique SC by BS in downlink user channels. The answer to this question has given birth to a strong and clear new theory that can provide almost an unlimited capacity in a WCDMA network which can be 2 Mb/s per user instead of per cell or up to 14.4 Mb/s per user instead of per cell with High- Speed Downlink Packet Access (HSDPA).
3rd Mosharaka International Conference on Communications, Propagation, and Electronics (MIC-CPE 2010)
Congress
2010 Global Congress on Communications, Propagation, and Electronics (GC-CPE 2010), 5-7 March 2010, Amman, Jordan
Pages
16-19
Topics
Communication Channels Multiple Access Techniques
ISSN
2227-331X
DOI
BibTeX
@inproceedings{392CPE2010,
title={New Approach to Eliminate Capacity Limitation in CDMA},
author={ },
booktitle={2010 Global Congress on Communications, Propagation, and Electronics (GC-CPE 2010)},
year={2010},
pages={16-19},
doi={}},
organization={Mosharaka for Research and Studies}
}
