S.V. Bhooshan

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We propose a priority based code assignment (PBA) scheme for 3G and beyond CDMA communication systems based upon OVSF (orthogonal variable spreading factor) channelization codes. The PBA scheme is superior to previous code assignment schemes because it differentiates code assignment algorithms for real time and best effort traffic which is the requirement(More)
UTRA-FDD systems use orthogonal variable spreading factor (OVSF) codes for channel separation in uplink and downlink. The OVSF codes are the limited resources in the downlink. The limited codes as well as code blocking property of OVSF codes gives lower system throughput. In this paper the OVSF code tree is extended such that the capacity of the tree(More)
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