Postdetection phase combining diversity

Ikura, M.; Adachi, Fumiyuki

doi:10.1109/25.293648

Cited by 12 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of this situation, the combination of differential detection (DD) and combining after detection, such as selective combining after differential detection (DD-SC) [2] and maximal ratio combining after differential detection (DD-MRC) [3], are mostly considered as diversity reception for differential PSK signals [4,5]. Aiming at improvement of the BER performance, MRC with the decision feedback-type multiple differential phase detection scheme [10] is also proposed [6].…”

Section: Introductionmentioning

confidence: 99%

Metric weighted diversity combining based on multiple differential phase detection and its performance in mobile communication environments

Kojima

Miyake

Fujino

et al. 2001

Electron. Comm. Jpn. Pt. I

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Metric weighted diversity combining based on multiple differential phase detection and its performance in mobile communication environments

Kojima

Miyake

Fujino

et al. 2001

Electron. Comm. Jpn. Pt. I

View full text Add to dashboard Cite

“…6 BER performance of proposed 4-branch MRC diversity receiver The BER performance levels of the proposed 4-branch diversity receiver with three sets of F, = (2,5,6,4,3,5, 6), (3,4,6,4,3,5,6) and (3,5,6,4,3,5,6) are shown in Fig. 6.…”

Section: Ednomentioning

confidence: 99%

“…In general, the hardware size of the multiplier is large. Moreover, the phase combining diversity circuit needs the phase compensation circuit to compensate erroneous phase combining [5]. However, when there are more than two diversity branches, the phase compensation scheme…”

Section: Introductionmentioning

confidence: 99%

“…Phase combining (PC) diversity was proposed [5] to solve this problem. In the PC diversity receiver, received signal vectors are converted into scalar phase signals in each diversity branch.…”

Section: Introductionmentioning

confidence: 99%

“…To improve the transmission quality in fading channels, several diversity schemes have been proposed and analyzed [1]- [5]. Most mobile communication systems use one form of diversity or another because of its high performance and easy implementation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Postdetection maximal ratio combining diversity receiver with scalar phase signals

Kumagai

Kobayashi²

Proceedings of ICUPC 97 - 6th International Conference on Universal Personal Communications

View full text Add to dashboard Cite

This paper proposes 2-branch and 4-branch postdetection maximal ratio combining (MRC) diversity receivers that offer sufficient diversity gain and sharply reduced hardware size. The proposed receivers utilize the scalar phase signals, which are the output signal of the demodulator of each branch, and some ROM tables. No multipliers, which require a lot of hardware size, are used. Computer simulation results show that the proposed 2-branch MRC diversity receiver reduces the hardware size to less than 30 % compared to the 2-branch phase combining diversity receiver, which achieves almost the same diversity gain while reducing the hardware size compared to the conventional 2-branch MRC diversity receivers, and the EJN,, degradation at the bit error rate (BER) of lo3 is less than only 0.2 dB from the ideal BER performance. The proposed 4-branch MRC diversity receiver reduces the hardware size to less than 10 % compared to the conventional 4-branch MRC diversity receivers and its EJN, degradation at the BER of is about 0.6 dB.

show abstract

SIR weighting combining diversity for digital mobile communications

Maehara¹,

Sasamori²,

Takahata³

2002

Electron. Comm. Jpn. Pt. I

View full text Add to dashboard Cite

SUMMARYDiversity reception is a powerful technique to reduce the degradation of transmission quality caused by fading. One of the techniques, postdetection maximal-ratio combiner (MRC), is not necessarily effective under cochannel interference, because received signal strength used as the weighting factor is not relative to the instantaneous signalto-interference power ratio (SIR). The paper proposes an SIR estimation method using the matched filter and a diversity scheme using the estimated SIR as the weighting factor. The performance is evaluated theoretically and by means of computer simulations. The results show that the proposed SIR estimation method can estimate the accurate instantaneous SIR and that the BER characteristics of the proposed diversity scheme under cochannel interference realize better performances than those of MRC.

show abstract

Postdetection phase combining diversity

Cited by 12 publications

References 9 publications

Metric weighted diversity combining based on multiple differential phase detection and its performance in mobile communication environments

Metric weighted diversity combining based on multiple differential phase detection and its performance in mobile communication environments

Postdetection maximal ratio combining diversity receiver with scalar phase signals

SIR weighting combining diversity for digital mobile communications

Contact Info

Product

Resources

About