# Optimal Transmit Strategy for MISO Channels with Joint Sum and Per-antenna Power Constraints

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## Optimal Transmit Strategy for MISO Channels with Joint Sum and Per-antenna Power Constraints

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### channel h = [1.0984 + 0.7015i, −0.2779 − 2.0518i] T , noise

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Total transmit power: Pl transmit power: Pl transmit power: Ptot Sum power constraint

Joint sum and per−antenna power constraints

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### b) Optimal transmission rate examples: In this part, we illustrate the trend of the transmission rate in differ-

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### Fig. 3: MISO 3 ×1 optimal power allocation with joint sum and per-antenna power constraints where ’Region 1’ is sum power constraint only region, and ’Region 2’ is joint sum and per- antenna power constraints region when using full sum transmit power P tot .

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### noise variance is σ 2 = 1. The total transmit power increases

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Capacity [bps/Hz]

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P2= 7, ˆP3= 10 Pˆ2>25, ˆP3= 10 Pˆ2>25 and ˆP3>25 OP1, Ptot= 25

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## References

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