Subspace precoding with limited feedback for the massive MIMO interference channel

Bazzi, Samer; Dietl, Guido; Utschick, Wolfgang

doi:10.1109/sam.2014.6882395

Cited by 2 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The availability of the perfect channel state information (CSI) at each node is one of the main pre‐requirements to perform IA, while the imperfect CSI degrades the IA performance in terms of sum rate, achievable DoF and bit error rate (BER). A lot of research efforts have focused on analysing the performance of IA in MIMO ICs [14–20]; for example in [14] the impact of channel error on the achievable rate of symmetric K‐user MIMO IA networks is studied and the lower and upper bounds of the sum rate are derived analytically. In [20], a non‐iterative two‐stage pre‐processing filter scheme is presented to reduce the CSI feedback overhead of interfering links for the massive MIMO IC.…”

Section: Introductionmentioning

confidence: 99%

Interference alignment in MIMO interference broadcast channels with imperfect CSI

Atbaei

Tadaion

2019

IET Communications

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Interference alignment in MIMO interference broadcast channels with imperfect CSI

Atbaei

Tadaion

2019

IET Communications

View full text Add to dashboard Cite

“…When supporting a variable number of antennas, it could adjust flexibly the feedback overhead and does not have to change the structure of the quantizer. Literature [13] designs a noniterative two-stage precoding method with limited feedback for the interference channel in massive MIMO. The second stage precoders can compress the CSI of interfering links.…”

Section: Introductionmentioning

confidence: 99%

Limited Feedback for 3D Massive MIMO under 3D-UMa and 3D-UMi Scenarios

Kang

2015

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

For three-dimensional (3D) massive MIMO utilizing the uniform rectangular array (URA) in the base station (BS), we propose a limited feedback transmission scheme in which the channel state information (CSI) feedback operations for horizontal domain and vertical domain are separate. Compared to the traditional feedback scheme, the scheme can reduce the feedback overhead, code word index search complexity, and storage requirement. Also, based on the zenith of departure angle (ZoD) distribution in 3D-Urban Macro Cell (3D-UMa) and 3D-Urban Micro Cell (3D-UMi) scenarios, we propose the angle quantization codebook for vertical domain, while the codebook of long term evolution-advanced (LTE-Advanced) is still adopted in horizontal domain to preserve compatibility with the LTE-Advanced. Based on the angle quantization codebook, the subsampled 3-bit DFT codebook is designed for vertical domain. The system-level simulation results reveal that, to compromise the feedback overhead and system performance, 2-bit codebook for 3D-UMa scenario and 3-bit codebook for 3D-UMi scenario can meet requirements in vertical domain. The feedback period for vertical domain can also be extended appropriately to reduce the feedback overhead.

show abstract

Subspace precoding with limited feedback for the massive MIMO interference channel

Cited by 2 publications

References 13 publications

Interference alignment in MIMO interference broadcast channels with imperfect CSI

Interference alignment in MIMO interference broadcast channels with imperfect CSI

Limited Feedback for 3D Massive MIMO under 3D-UMa and 3D-UMi Scenarios

Contact Info

Product

Resources

About