On the Channel Outage Probability of MultiUser CDMA Systems

Zerlin, B.; Brehmer, Johannes; Nossek, Josef A.

doi:10.1109/pimrc.2005.1651696

Cited by 2 publications

(3 citation statements)

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“…A channel outage is said to occur when the SINR γ l falls below the required threshold γ rq l [36]. Since the MUEs in the macro cell access the common MBS resource transmit power, a user-wise decoupled mapping of channel coefficients to SINR becomes impossible.…”

Section: Outage Probability Analysismentioning

confidence: 99%

“…Using lim ϵ−→0 + 1 ϵ = ∞, (37) and (38) transforms to the trivial condition r L < ∞. With the definition of H in (37), the L th order integral defined (36) can then be computed as…”

Section: Outage Probability Analysismentioning

confidence: 99%

“…After some mathematical manipulations, the analytical lower and upper bound can be computed by first defining strict subsets H lb and H lb respectively given as 41), (42) and following the work of [36], the resultant lower and upper bounds can be given respectively as below,…”

Section: Outage Probability Analysismentioning

confidence: 99%

See 2 more Smart Citations

MIMO Hybrid PD-SCMA NOMA Uplink Transceiver System

Chege

Walingo

2022

IEEE Access

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The application of multiple-input multiple-output (MIMO) on power domain sparse code multiple access (PD-SCMA) systems would enhance their performance by increasing the multiplexing and diversity gains. However, this is at a cost of increased detection complexity, as more users and antennas are deployed. This work develops and investigates the performance of spatial multiplexing MIMO based hybrid PD-SCMA system (M-PD-SCMA) transceiver on an uplink heterogeneous network over Rayleigh flatfading channels. The aim is to strike a balance on the number of antennas and capacity/spectral efficiency. The system capacity and outage robustness of the proposed transceiver in imperfect channels is evaluated and the bit error rate (BER) performance analysed. The link-level simulation results demonstrate that M-PD-SCMA achieves performance benchmark with PD-SCMA schemes. The proposed receiver achieves guaranteed BER performance with an increase in the number of transmit and receive antennas. Besides, the results highlight the impact of the codebook size, number of layers and power level distinctiveness on the outage bounds at each receive antenna at different SNR levels. Thus, the feasibility of an M-PD-SCMA system is validated.

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Section: Outage Probability Analysismentioning

confidence: 99%

Section: Outage Probability Analysismentioning

confidence: 99%