Spreading Code Allocation for Downlink MC-CDMA

Cheng, Yu-Chieh; Jao, Chin-Kuo; Wei, Shyue‐Win

doi:10.1109/icc.2008.950

Cited by 3 publications

(1 citation statement)

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“…Multi Access Interference (MAI) and Inter-carrier Interference (ICI) can be minimized by using orthogonal code and orthogonal sub-carriers, respectively. In accumulation, the system provides non-frequency selective fading channel [7], [8], [9]. MC -DS -CDMA: In the MC-DS-CDMA technique, the serial to-parallel converted data stream is multiplied by the spreading sequence and then the chips belonging to the same symbol modulate the same carrier, as shown in Figure 10.…”

Section: Ds-cdma Transmitter and Receivermentioning

confidence: 99%

Multiple Access Schemes for Wireless Cellular Networks - Survey

2024

IJFMR

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The achievement of future development goals in 5G is dependent on the implementation of ITU-published usage scenarios, enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC), and Ultra-reliable Low Latency Communication (URLLC). To support these usage scenarios, an efficient multiple access scheme must be implemented, as classical multiple access schemes used in previous generations will not. Non-orthogonal multiple access schemes are the answer to today's needs for high spectrum efficiency, low latency, accommodating a larger number of users, and providing justice to users who are far from the base station. This survey's condensed overview of various orthogonal and non-orthogonal multiple access schemes is expected to assist researchers in developing new multiple access schemes for 5G and beyond.

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Section: Ds-cdma Transmitter and Receivermentioning

confidence: 99%