Analysis of the effect of Modulation Techniques, Spreading Codes and Turbo Codes for HSDPA under Different Channel Conditions
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 6
Abstract
HSDPA (High Speed Downlink Packet Access) is gaining popularity because of its capability of delivering higher data rate transmission with minimum latency then the GSM (global system for mobile communications) and 2.5G GPRS (general packet radio service) systems. The stated improvements are in corporated by the application of multi-codes and adaptive modulation and coding techniques combining the two in proper way gives the best data rate for the available channel conditions. The latest release of HSDPA (release 11) facilitates the selection of QPSK, 16-QAM and 64-QAM as modulation technique, orthogonal variable spreading factor (OVSF) as spreading codes and turbo codes with various code rates. Because of great impact of these factors on the selection of best data rate according to channel conditions in this paper we experimented with other available options for the modulation techniques, spreading codes and turbo codes for multipath fading channel conditions to achieve the most efficient combination for achieving the optimum data rate at particular channel conditions.
Authors and Affiliations
Dhruv Thakur
Keywords
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